Revert "Telephony: Add getLteOnGsmMode() method (1/2)"

This reverts commit 83f229b92557df59ac44b545379f3c70175910ba

Change-Id: I16f85aa6420cf00cacbad672f55c634f94a1b0f2
Merge "Revert "Telephony: Add getLteOnGsmMode() method (1/2)"" into jellybean