callcatcher: update unused code

Change-Id: Idaed255e4f004ad555ccbd6ba9dc29bf522d3c5f
OKButtons no longer loaded from resource files

Change-Id: Ice1d71e730519697c891d66909550876c9d23ebb
CancelButtons no longer loaded from resource files

Change-Id: If95ae86708660007e6a0f4df27b3c364a9653dae