Revert "Settings ChooseLockscreen* dismiss in background."

This reverts commit 302aa72446.

Reason for revert: b/308468754

Change-Id: I27ab7e374324b99e7a039b06ad698c214d97592a

src/com/android/settings/password/ChooseLockGeneric.java

@@ -200,14 +200,6 @@ public class ChooseLockGeneric extends SettingsActivity {
             return SettingsEnums.CHOOSE_LOCK_GENERIC;
         }
 
-        @Override
-        public void onPause() {
-            super.onPause();
-            if (!getActivity().isChangingConfigurations() && !mWaitingForConfirmation) {
-                finish();
-            }
-        }
-
         @Override
         public void onCreate(Bundle savedInstanceState) {
             super.onCreate(savedInstanceState);