diff --git a/services/core/java/com/android/server/notification/NotificationManagerService.java b/services/core/java/com/android/server/notification/NotificationManagerService.java
old mode 100755
new mode 100644
index 4cee0cb73c9d9..44e17838fa708
--- a/services/core/java/com/android/server/notification/NotificationManagerService.java
+++ b/services/core/java/com/android/server/notification/NotificationManagerService.java
@@ -1491,53 +1491,6 @@ public class NotificationManagerService extends SystemService {
         return out;
     }
 
-    protected class StrongAuthTracker extends LockPatternUtils.StrongAuthTracker {
-
-        SparseBooleanArray mUserInLockDownMode = new SparseBooleanArray();
-        boolean mIsInLockDownMode = false;
-
-        StrongAuthTracker(Context context) {
-            super(context);
-        }
-
-        private boolean containsFlag(int haystack, int needle) {
-            return (haystack & needle) != 0;
-        }
-
-        public boolean isInLockDownMode() {
-            return mIsInLockDownMode;
-        }
-
-        @Override
-        public synchronized void onStrongAuthRequiredChanged(int userId) {
-            boolean userInLockDownModeNext = containsFlag(getStrongAuthForUser(userId),
-                    STRONG_AUTH_REQUIRED_AFTER_USER_LOCKDOWN);
-            mUserInLockDownMode.put(userId, userInLockDownModeNext);
-            boolean isInLockDownModeNext = mUserInLockDownMode.indexOfValue(true) != -1;
-
-            if (mIsInLockDownMode == isInLockDownModeNext) {
-                return;
-            }
-
-            if (isInLockDownModeNext) {
-                cancelNotificationsWhenEnterLockDownMode();
-            }
-
-            // When the mIsInLockDownMode is true, both notifyPostedLocked and
-            // notifyRemovedLocked will be dismissed. So we shall call
-            // cancelNotificationsWhenEnterLockDownMode before we set mIsInLockDownMode
-            // as true and call postNotificationsWhenExitLockDownMode after we set
-            // mIsInLockDownMode as false.
-            mIsInLockDownMode = isInLockDownModeNext;
-
-            if (!isInLockDownModeNext) {
-                postNotificationsWhenExitLockDownMode();
-            }
-        }
-    }
-
-    private StrongAuthTracker mStrongAuthTracker;
-
     public NotificationManagerService(Context context) {
         super(context);
         Notification.processWhitelistToken = WHITELIST_TOKEN;
@@ -1719,7 +1672,6 @@ public class NotificationManagerService extends SystemService {
 
         mHandler = new WorkerHandler(looper);
         mRankingThread.start();
-        mStrongAuthTracker = new StrongAuthTracker(getContext());
         String[] extractorNames;
         try {
             extractorNames = resources.getStringArray(R.array.config_notificationSignalExtractors);
@@ -2005,7 +1957,6 @@ public class NotificationManagerService extends SystemService {
             mRoleObserver = new RoleObserver(getContext().getSystemService(RoleManager.class),
                     mPackageManager, getContext().getMainExecutor());
             mRoleObserver.init();
-            new LockPatternUtils(getContext()).registerStrongAuthTracker(mStrongAuthTracker);
         } else if (phase == SystemService.PHASE_THIRD_PARTY_APPS_CAN_START) {
             // This observer will force an update when observe is called, causing us to
             // bind to listener services.