Remove RcsProvider

This change removes RcsProvider - this is because it makes use of hidden
APIs and it is not launched

Test: Builds fine, passes presubmits

Change-Id: I03b81e5e6ffef4ac8fee3d20d6475b1a8f918d02
Merged-In: I03b81e5e6ffef4ac8fee3d20d6475b1a8f918d02
15 files changed