Revert "Allow changing theme to Holo.Light without crashing"

http://review.cyanogenmod.org/#/c/70745/ solves the issue
that this patch originally was created for.

This reverts commit 8cc23d58abc4874fe049a8dfa70910cf0b5dd9b2.

Change-Id: Ia350a03749202a2c0ae809400a3ebb554551d601
(cherry picked from commit 871babd9b97f4268719ed3772617244953ac2ed8)
Settings: Remove leftover from old theme chooser

Change-Id: Iaf97e2b94c27839eb4f9827a77917fe21a311b4c
(cherry picked from commit 20901b9e664de3ebb2ccf5655ac571bf9063b3ac)
Settings: add last app action to be assigned to hardware keys

Change-Id: I9004412528a7c32fecd7edea6167c1b80c51730d
Signed-off-by: Roman Birg <roman@cyngn.com>
(cherry picked from commit cbd8c8881e2899188e4d50c2b1c86aa75b2c6037)