Dialer: Remove unused strings

Change-Id: Id944ac3f7f4bb4b04e652120774a145f7349b848
Revert "Merge "Add reverse lookup provider "Das Telefonbuch" (DE)." into cm-11.0"

This reverts commit 1a130e5da140faab5645a053cec8788aeff15c23, reversing
changes made to 70f613ae56ceb40211beb2da2f2bc7f65b2a4667.
[3/3] Base: Incoming Call in Background
[2/2] Dialer: Disable Statusbar and Navbar during call by Proximity Sensor
Revert "Chinese Location Lookup [1/2] Dialer: Chinese Reverse Lookup"

This reverts commit 6605b6292df97b66785a06927d7bcd28c217d121.
[1/3] Dialer: Add Google Reverse Lookup
Dialer: Support 4.4.3
Dialer: Fix letters width
Dialer: T9: Fix country priority over language
Dialer: Enable Call Recording