Revert "Added xxhdpi images  for cab_background actionbar"

This reverts commit f67a597b9b5c804f5285b6e2296a119cf3a3b955.

This breaks call log.

http://i.imgur.com/MsGMo76.png

Change-Id: I4c4bd1c52006372c5aca38d74d6f7ea7da72c74d
Merge "Revert "Added xxhdpi images  for cab_background actionbar"" into jb43