Dialer: Remove unused strings

Change-Id: Id944ac3f7f4bb4b04e652120774a145f7349b848
[2/2] Dialer: Add a non-intrusive dialoger for incoming calls

Change-Id: Ibbb9653b4a1da12fe3a7ad8f98ecbb8bffb13311
Dialer: add Incoming Call Background (2/2)

Change-Id: I9f494385b53918c755cd9b12a0ecba989e153ad8
Dialer: Allow enabling call recording (2/3)

Change-Id: I96b5b579301400762799d03c64a38bc27223382e
Dialer: Disable call recording in blacklisted area

Change-Id: I6c81ea80b540cfb32a062a41fcbcb3342d94506a