Clean up LayoutPreference

- There is no any custom preference uses R.id.all_details,
  so clean up some code.

Test: robotest
Bug: 120005054
Change-Id: Ib40483934cd6d6c0bbaa2864d40dbf09483d98aa

src/com/android/settings/applications/LayoutPreference.java

@@ -82,10 +82,6 @@ public class LayoutPreference extends Preference {
 
     private void setView(View view) {
         setLayoutResource(R.layout.layout_preference_frame);
-        final ViewGroup allDetails = view.findViewById(R.id.all_details);
-        if (allDetails != null) {
-            Utils.forceCustomPadding(allDetails, true /* additive padding */);
-        }
         mRootView = view;
         setShouldDisableView(false);
     }