BUG 2303 : Remove the implementation of AddRaftPeer/RemoveRaftPeer

It is both unused and incorrect

Change-Id: Ie0a9844ccf4de7dae68586954031599b55646c47
Signed-off-by: Moiz Raja <moraja@cisco.com>
Merge "BUG 2303 : Remove the implementation of AddRaftPeer/RemoveRaftPeer" into stable/helium