Revert "Exempt Android Auto from background FGS restriction."

This reverts commit b91ee9ca7b.

Reason for revert: Do not hard code packageName in AOSP code, there is better implementation.

Change-Id: Ibc6965caf8aed2c83f27d622f401aff0042c59e9

services/core/java/com/android/server/am/ActiveServices.java

@@ -408,9 +408,6 @@ public final class ActiveServices {
         if (!TextUtils.isEmpty(systemCaptionsServicePackageName)) {
             mWhiteListAllowWhileInUsePermissionInFgs.add(systemCaptionsServicePackageName);
         }
-        // TODO change this to configurable in config.xml.
-        final String projectionPackage = "com.google.android.projection.gearhead";
-        mWhiteListAllowWhileInUsePermissionInFgs.add(projectionPackage);
     }
 
     ServiceRecord getServiceByNameLocked(ComponentName name, int callingUser) {