Remove unneeded margin below action bar subtitles
Remove unneeded margin below action bar subtitles

This just throws off alignment when the natural centering of this
layout will take care of things.

Bug 6369593

Change-Id: If0993091e0d47011f3bf5dd0b5a1fa649471f8e6

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base