Revert "Settings ChooseLockscreen* dismiss in background."

This reverts commit 302aa72446.

Reason for revert: b/308468754

Change-Id: I27ab7e374324b99e7a039b06ad698c214d97592a

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

@@ -98,14 +98,6 @@ public class ChooseLockPattern extends SettingsActivity {
         return modIntent;
     }
 
-    @Override
-    public void onPause() {
-        super.onPause();
-        if (!isChangingConfigurations()) {
-            finish();
-        }
-    }
-
     public static class IntentBuilder {
         private final Intent mIntent;