Revert "Make getRssi() API for LTE Received Signal Strength Indication (RSSI)"

This reverts commit c3380f767ad3c5c1686891aae75d445c3113996a.

Reason for revert: b/119055885

Change-Id: I47e6dd038d97a9d5a48d36b53f9e75e356a1e409
2 files changed