Revert "Mobile Network Battery Saver Mode"

This reverts commit fa2a7490142179e600f66e8008c8c7ec39aa579c.

Conflicts:
	res/values-es/mintkat.xml
Revert "[2/2] Telephony: allow disabling call end sound"

This reverts commit 9d426930788202fb055b41be196c4f422607e1ef.

Conflicts:
	res/values-es/mintkat.xml