Fix regressed signals test

Pause is now hard pause, so don't test that pause includes final sync
This part of test was a bit racy anyways

flow/e2e/postgres/peer_flow_pg_test.go

@@ -1215,9 +1215,6 @@ func (s PeerFlowE2ETestSuitePG) Test_Dynamic_Mirror_Config_Via_Signals() {
 		if !s.t.Failed() {
 			// wait for first RegisterDelayedCallback to hit.
 			e2e.EnvWaitFor(s.t, env, 1*time.Minute, "sent pause signal", func() bool {
-				// adding 1 more row while pausing - guarantee finishing another sync
-				addRows(1)
-
 				return sentPause
 			})
 		} else {
@@ -1258,10 +1255,6 @@ func (s PeerFlowE2ETestSuitePG) Test_Dynamic_Mirror_Config_Via_Signals() {
 	}, 56*time.Second)
 
 	go func() {
-		e2e.EnvWaitFor(s.t, env, 1*time.Minute, "normalize 1 record - first table", func() bool {
-			return s.comparePGTables(srcTable1Name, dstTable1Name, "id,t") == nil
-		})
-
 		// we have a paused mirror, wait for second signal to hit.
 		e2e.EnvWaitFor(s.t, env, 1*time.Minute, "sent updates signal", func() bool {
 			return sentUpdate