Revert "SnapshotMergeReported: CTS test"
This reverts commit 6a708c007a57e5c8c30da310ac231723ccd228c1.
Bug: 150809282
Bug: 150949719
Reason for revert: this atom can be logged by any device,
but we only care about the data from Google devices,
so there's no need to enforce our partners to enable
this with a CTS test.
Change-Id: I847471d8612229a25897564cf1e5e1412d7232f3