CM11 Themes: remove handleThemeConfigChanges

This was used by the T-Mobile theme chooser and is no longer
needed with the new chooser.

Change-Id: I035606ffe6cb3efc82a3a0ce79215509d8289503
Merge "CM11 Themes: remove handleThemeConfigChanges" into cm-11.0
Merge branch 'cm-11.0' of git://github.com/CyanogenMod/android_frameworks_base into cd-4.4