diff --git a/libc/upstream-freebsd/android/include/freebsd-compat.h b/libc/upstream-freebsd/android/include/freebsd-compat.h
index 3228701..b16a688 100644
--- a/libc/upstream-freebsd/android/include/freebsd-compat.h
+++ b/libc/upstream-freebsd/android/include/freebsd-compat.h
@@ -14,39 +14,13 @@
  * limitations under the License.
  */
 
-#ifndef _BIONIC_FREEBSD_COMPAT_H_included
-#define _BIONIC_FREEBSD_COMPAT_H_included
+#pragma once
 
 #define _BSD_SOURCE
 
-#include <sys/cdefs.h>
-#include <stddef.h> // For size_t.
-
 #define REPLACE_GETOPT
 
-/*
- * FreeBSD's libc has three symbols for every symbol:
- *
- *     __f will be the actual implementation.
- *     _f will be a weak reference to __f (used for calls to f from within the library).
- *     f will be a weak reference to __f (used for calls to f from outside the library).
- *
- * We collapse this into just the one symbol, f.
- */
-
-/* Prevent weak reference generation. */
-#define __weak_reference(sym,alias)
-
-/* Ensure that the implementation itself gets the underscore-free name. */
-#define __sleep sleep
-#define __usleep usleep
-
-/* Redirect internal C library calls to the public function. */
-#define _nanosleep nanosleep
-
 /* FreeBSD has this, but we can't really implement it correctly on Linux. */
 #define issetugid() 0
 
 #define __compiler_membar() __asm __volatile(" " : : : "memory")
-
-#endif
diff --git a/libc/upstream-freebsd/android/include/namespace.h b/libc/upstream-freebsd/android/include/namespace.h
index a3f850e..e69de29 100644
--- a/libc/upstream-freebsd/android/include/namespace.h
+++ b/libc/upstream-freebsd/android/include/namespace.h
@@ -1,20 +0,0 @@
-/*
- * Copyright (C) 2013 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.
- */
-
-#ifndef _BIONIC_FREEBSD_NAMESPACE_H_included
-#define _BIONIC_FREEBSD_NAMESPACE_H_included
-
-#endif
diff --git a/libc/upstream-freebsd/android/include/un-namespace.h b/libc/upstream-freebsd/android/include/un-namespace.h
index a3f850e..e69de29 100644
--- a/libc/upstream-freebsd/android/include/un-namespace.h
+++ b/libc/upstream-freebsd/android/include/un-namespace.h
@@ -1,20 +0,0 @@
-/*
- * Copyright (C) 2013 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.
- */
-
-#ifndef _BIONIC_FREEBSD_NAMESPACE_H_included
-#define _BIONIC_FREEBSD_NAMESPACE_H_included
-
-#endif