jflte: remove network_mode.xml overlay

Change-Id: Id528397699df45a1efcd983d4f196e3638225e5a

Conflicts:
	overlay/packages/services/Telephony/res/values/network_mode.xml
init_jflte: clean up cdma/gsm variant props

Change-Id: If61f456521a4b85d578867bcc78d74cdbdaa36c6

Conflicts:
	init/init_jflte.c

Conflicts:
	init/init_jflte.c