Revert "Include stack traces from keystore2 in bugreports on debuggable builds"

This reverts commit e846316.

Dumping keystore is not allowed due to an SELinux neverallow rule most
recently added in aosp/3311665.

Bug: 376065666
Test: Check for denial after taking a bug report
Flag: EXEMPT bugfix
Change-Id: I0e6a2ff1578602f7616c12e8fc9253dddaa67779

Author: toddfrederick

libs/dumputils/dump_utils.cpp

@@ -50,7 +50,6 @@ static const char* native_processes_to_dump[] = {
 
 // Native processes to dump on debuggable builds.
 static const char* debuggable_native_processes_to_dump[] = {
-        "/system/bin/keystore2",
         "/system/bin/vold",
         NULL,
 };