Revert "[RCS] Implement ImsService API in RcsService"

This reverts commit ddb443700e0dd57d99d658ee19fe807554a9ec19.

Reason for revert: This caused a regression in UCE functionality on R devices.

Bug: 146237308
Test: manual, verified RCS is working correctly.
Change-Id: Id759cc981c44b0017a6f508bc0bae6639548276c
14 files changed
tree: 87e4dbb320cde387d67e32614ac95d79f08f2158
  1. rcs/
  2. OWNERS