Revert "Process LTE Cell Location information in GsmServiceStateTracker"

This reverts commit 5cd74c8b.

Google has added LTE location infomation support in GSMPhone in MR2.
Hence the change is no longer needed.

CRs-Fixed: 522201
Change-Id: Iac2f9b3d066bac6e3a16eabd9d750f4ca34b24b8