Revert "Allowing userdebug/eng builds crash dump access to ks"

This reverts commit f09391624a6aa88d77b6788cb59f321efb606355.

Reason for revert: Permissions no longer necessary
Test: builds and boots

Change-Id: Ia204cc1ea98c5e36540ad1d39c65f1cb3cdaa783
diff --git a/private/crash_dump.te b/private/crash_dump.te
index b2d3bd5..a9a802c 100644
--- a/private/crash_dump.te
+++ b/private/crash_dump.te
@@ -19,13 +19,7 @@
 }:process { ptrace signal sigchld sigstop sigkill };
 
 userdebug_or_eng(`
-  allow crash_dump {
-    apexd
-    keystore
-    llkd
-    logd
-    vold
-  }:process { ptrace signal sigchld sigstop sigkill };
+  allow crash_dump { apexd llkd logd vold }:process { ptrace signal sigchld sigstop sigkill };
 ')
 
 # Read ART APEX data directory
@@ -135,7 +129,6 @@
   init
   kernel
   keystore
-  userdebug_or_eng(`-keystore')
   llkd
   userdebug_or_eng(`-llkd')
   logd
diff --git a/private/keystore.te b/private/keystore.te
index 53e5dd3..b43271f 100644
--- a/private/keystore.te
+++ b/private/keystore.te
@@ -88,8 +88,7 @@
 neverallow { domain -keystore -init } keystore_data_file:dir *;
 neverallow { domain -keystore -init } keystore_data_file:notdevfile_class_set *;
 
-# TODO(b/186868271): Remove the crash dump exception soon-ish (maybe by May 14, 2021?)
-neverallow { domain userdebug_or_eng(`-crash_dump') } keystore:process ptrace;
+neverallow * keystore:process ptrace;
 
 # Only keystore can set keystore.crash_count system property. Since init is allowed to set any
 # system property, an exception is added for init as well.