Remove unnecessary drawable code in CompoundButton
Remove unnecessary drawable code in CompoundButton

Some of the code in setButtonDrawable() was unnecessary, resetting
the button drawable state and then refreshing it. This caused many redundant
calls, which can add up, especially during inflation.

Change-Id: I873cf5eef697b5435a1b827cd68e5d836ee25124

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