diff --git a/libc/NOTICE b/libc/NOTICE
index 8260112..ff16da7 100644
--- a/libc/NOTICE
+++ b/libc/NOTICE
@@ -883,22 +883,6 @@
 -------------------------------------------------------------------
 
 Copyright (C) 2021 The Android Open Source Project
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-
--------------------------------------------------------------------
-
-Copyright (C) 2021 The Android Open Source Project
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
diff --git a/libc/rust/Android.bp b/libc/rust/Android.bp
deleted file mode 100644
index 44cf848..0000000
--- a/libc/rust/Android.bp
+++ /dev/null
@@ -1,30 +0,0 @@
-rust_bindgen {
-    name: "libsystem_properties_bindgen",
-    wrapper_src: "system_properties_bindgen.hpp",
-    crate_name: "system_properties_bindgen",
-    source_stem: "bindings",
-
-    bindgen_flags: [
-        "--size_t-is-usize",
-        "--allowlist-function=__system_property_find",
-        "--allowlist-function=__system_property_read_callback",
-        "--allowlist-function=__system_property_set",
-        "--allowlist-function=__system_property_wait",
-    ],
-}
-
-rust_library {
-    name: "libsystem_properties-rust",
-    crate_name: "system_properties",
-    srcs: [
-        "system_properties.rs",
-    ],
-    rustlibs: [
-        "libanyhow",
-        "libsystem_properties_bindgen",
-        "libthiserror",
-    ],
-    shared_libs: [
-        "libbase",
-    ],
-}
diff --git a/libc/rust/system_properties.rs b/libc/rust/system_properties.rs
deleted file mode 100644
index 189e8ee..0000000
--- a/libc/rust/system_properties.rs
+++ /dev/null
@@ -1,227 +0,0 @@
-/*
- * Copyright (C) 2021 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-//! This crate provides the PropertyWatcher type, which watches for changes
-//! in Android system properties.
-
-use anyhow::{anyhow, Context, Result as AnyhowResult};
-use system_properties_bindgen::prop_info as PropInfo;
-use std::os::raw::c_char;
-use std::ptr::null;
-use std::{
-    ffi::{c_void, CStr, CString},
-    str::Utf8Error,
-};
-use thiserror::Error;
-
-/// Errors this crate can generate
-#[derive(Error, Debug)]
-pub enum PropertyWatcherError {
-    /// We can't watch for a property whose name contains a NUL character.
-    #[error("Cannot convert name to C string")]
-    BadNameError(#[from] std::ffi::NulError),
-    /// We can only watch for properties that exist when the watcher is created.
-    #[error("System property is absent")]
-    SystemPropertyAbsent,
-    /// __system_property_wait timed out despite being given no timeout.
-    #[error("Wait failed")]
-    WaitFailed,
-    /// read callback was not called
-    #[error("__system_property_read_callback did not call callback")]
-    ReadCallbackNotCalled,
-    /// read callback gave us a NULL pointer
-    #[error("__system_property_read_callback gave us a NULL pointer instead of a string")]
-    MissingCString,
-    /// read callback gave us a bad C string
-    #[error("__system_property_read_callback gave us a non-UTF8 C string")]
-    BadCString(#[from] Utf8Error),
-    /// read callback returned an error
-    #[error("Callback failed")]
-    CallbackError(#[from] anyhow::Error),
-    /// Failure in setting the system property
-    #[error("__system_property_set failed.")]
-    SetPropertyFailed,
-}
-
-/// Result type specific for this crate.
-pub type Result<T> = std::result::Result<T, PropertyWatcherError>;
-
-/// PropertyWatcher takes the name of an Android system property such
-/// as `keystore.boot_level`; it can report the current value of this
-/// property, or wait for it to change.
-pub struct PropertyWatcher {
-    prop_name: CString,
-    prop_info: *const PropInfo,
-    serial: system_properties_bindgen::__uint32_t,
-}
-
-impl PropertyWatcher {
-    /// Create a PropertyWatcher for the named system property.
-    pub fn new(name: &str) -> Result<Self> {
-        Ok(Self { prop_name: CString::new(name)?, prop_info: null(), serial: 0 })
-    }
-
-    // Lazy-initializing accessor for self.prop_info.
-    fn get_prop_info(&mut self) -> Option<*const PropInfo> {
-        if self.prop_info.is_null() {
-            // Unsafe required for FFI call. Input and output are both const.
-            // The returned pointer is valid for the lifetime of the program.
-            self.prop_info = unsafe {
-                system_properties_bindgen::__system_property_find(self.prop_name.as_ptr())
-            };
-        }
-        if self.prop_info.is_null() {
-            None
-        } else {
-            Some(self.prop_info)
-        }
-    }
-
-    fn read_raw(prop_info: *const PropInfo, mut f: impl FnOnce(Option<&CStr>, Option<&CStr>)) {
-        // Unsafe function converts values passed to us by
-        // __system_property_read_callback to Rust form
-        // and pass them to inner callback.
-        unsafe extern "C" fn callback(
-            res_p: *mut c_void,
-            name: *const c_char,
-            value: *const c_char,
-            _: system_properties_bindgen::__uint32_t,
-        ) {
-            let name = if name.is_null() { None } else { Some(CStr::from_ptr(name)) };
-            let value = if value.is_null() { None } else { Some(CStr::from_ptr(value)) };
-            let f = &mut *res_p.cast::<&mut dyn FnMut(Option<&CStr>, Option<&CStr>)>();
-            f(name, value);
-        }
-
-        let mut f: &mut dyn FnOnce(Option<&CStr>, Option<&CStr>) = &mut f;
-
-        // Unsafe block for FFI call. We convert the FnOnce
-        // to a void pointer, and unwrap it in our callback.
-        unsafe {
-            system_properties_bindgen::__system_property_read_callback(
-                prop_info,
-                Some(callback),
-                &mut f as *mut _ as *mut c_void,
-            )
-        }
-    }
-
-    /// Call the passed function, passing it the name and current value
-    /// of this system property. See documentation for
-    /// `__system_property_read_callback` for details.
-    /// Returns an error if the property is empty or doesn't exist.
-    pub fn read<T, F>(&mut self, f: F) -> Result<T>
-    where
-        F: FnOnce(&str, &str) -> anyhow::Result<T>,
-    {
-        let prop_info = self.get_prop_info().ok_or(PropertyWatcherError::SystemPropertyAbsent)?;
-        let mut result = Err(PropertyWatcherError::ReadCallbackNotCalled);
-        Self::read_raw(prop_info, |name, value| {
-            // use a wrapping closure as an erzatz try block.
-            result = (|| {
-                let name = name.ok_or(PropertyWatcherError::MissingCString)?.to_str()?;
-                let value = value.ok_or(PropertyWatcherError::MissingCString)?.to_str()?;
-                f(name, value).map_err(PropertyWatcherError::CallbackError)
-            })()
-        });
-        result
-    }
-
-    // Waits for the property that self is watching to be created. Returns immediately if the
-    // property already exists.
-    fn wait_for_property_creation(&mut self) -> Result<()> {
-        let mut global_serial = 0;
-        loop {
-            match self.get_prop_info() {
-                Some(_) => return Ok(()),
-                None => {
-                    // Unsafe call for FFI. The function modifies only global_serial, and has
-                    // no side-effects.
-                    if !unsafe {
-                        // Wait for a global serial number change, then try again. On success,
-                        // the function will update global_serial with the last version seen.
-                        system_properties_bindgen::__system_property_wait(
-                            null(),
-                            global_serial,
-                            &mut global_serial,
-                            null(),
-                        )
-                    } {
-                        return Err(PropertyWatcherError::WaitFailed);
-                    }
-                }
-            }
-        }
-    }
-
-    /// Wait for the system property to change. This
-    /// records the serial number of the last change, so
-    /// race conditions are avoided.
-    pub fn wait(&mut self) -> Result<()> {
-        // If the property is null, then wait for it to be created. Subsequent waits will
-        // skip this step and wait for our specific property to change.
-        if self.prop_info.is_null() {
-            return self.wait_for_property_creation();
-        }
-
-        let mut new_serial = self.serial;
-        // Unsafe block to call __system_property_wait.
-        // All arguments are private to PropertyWatcher so we
-        // can be confident they are valid.
-        if !unsafe {
-            system_properties_bindgen::__system_property_wait(
-                self.prop_info,
-                self.serial,
-                &mut new_serial,
-                null(),
-            )
-        } {
-            return Err(PropertyWatcherError::WaitFailed);
-        }
-        self.serial = new_serial;
-        Ok(())
-    }
-}
-
-/// Reads a system property.
-pub fn read(name: &str) -> AnyhowResult<String> {
-    PropertyWatcher::new(name)
-        .context("Failed to create a PropertyWatcher.")?
-        .read(|_name, value| Ok(value.to_owned()))
-        .with_context(|| format!("Failed to read the system property {}.", name))
-}
-
-/// Writes a system property.
-pub fn write(name: &str, value: &str) -> AnyhowResult<()> {
-    if
-    // Unsafe required for FFI call. Input and output are both const and valid strings.
-    unsafe {
-        // If successful, __system_property_set returns 0, otherwise, returns -1.
-        system_properties_bindgen::__system_property_set(
-            CString::new(name)
-                .context("Failed to construct CString from name.")?
-                .as_ptr(),
-            CString::new(value)
-                .context("Failed to construct CString from value.")?
-                .as_ptr(),
-        )
-    } == 0
-    {
-        Ok(())
-    } else {
-        Err(anyhow!(PropertyWatcherError::SetPropertyFailed))
-    }
-}
diff --git a/libc/rust/system_properties_bindgen.hpp b/libc/rust/system_properties_bindgen.hpp
deleted file mode 100644
index 307cd6c..0000000
--- a/libc/rust/system_properties_bindgen.hpp
+++ /dev/null
@@ -1,19 +0,0 @@
-/*
- * Copyright (C) 2021 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include "sys/system_properties.h"