[automerger skipped] Remove unused telephony api files. am: db305ea9d7 am: fde0c134d1 -s ours

am skip reason: Change-Id Idbd05aeef055291fc50008129c30c4ae272c1ac0 with SHA-1 27d13cada5 is in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/12935958

Change-Id: Id7ff641c9d067e68cc78430a63bcf0fb9c92afdb