Revert "Messaging: Add "Mark as read" quick action for message notifications"

This reverts commit f19e916a0d4ffd95e36c5203f5e04887e47a087e.

Reason for revert: Reverting per Taesu Lee's comments, because it doesn't work and has issues.

Change-Id: I778362b628f4c3ae076dd943e77dee415984fba0
8 files changed