Revert "Added a new network capability MMTEL" am: bcfe8037e2 am: 39beeb7b45 am: 7992c40489 am: 8e2325ad42

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1928147

Change-Id: I80959a07d7b7a9a0e7065887da6d180f588c6cb9