Revert "Telephony: implement noise suppression for phone calls (2/2)"

This reverts commit cc60aa3c3ce9e1f82bb84e5d2013921c84330e18.

Conflicts:
	res/values/ras_strings.xml
Telephony: Fix NT_MODE case statements.

These changes are necessary because of a RIL bug. Network Mode 7 is
LTE/CDMA for Verizon, which maps to the const NT_MODE_GLOBAL. This
allows the network mode to be changed.

Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>
Change-Id: I7dae0684e475f3ffd33f767088a6de13c36caaa7
[2/2] services/Telephony: Combine LTE & 2G/3G Tiles

This combines both network tiles into one tile.
2G -> 3G -> 2G3G -> LTE

Linked commit: frameworks/base

Change-Id: Ib8c463e9bd9b9d70462e3a7544c54d239a1c3254