Cleanup.

Revert import changes that are both unneeded and violate coding style,
fixup coding style for some of our additions and simplify code.

Change-Id: I25f00e3ab16bde939cf82b0d3a0bfb77b90ac836

Conflicts:
	res/xml/call_feature_setting.xml
	src/com/android/phone/CallFeaturesSetting.java