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

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

Change-Id: I24e552ae8e10cf6066a2163f15cb4c222d68b82b