Revert "Notify listeners when syncing group expansion mgr with the pipeline."

This reverts commit 2b64f5149c53702ae96e68fd37c1af6d7ebdfdd9.

Reason for revert: b/296881063

Bug: 296881063

Change-Id: I6cf0eca0f84dd3f02a737920569035ab5793d872
3 files changed