fix TestJetStreamJWTMove flapper (#6115)

test(flapper): fix TestJetStreamJWTMove - by removing a check on stream
update for the configuration, likely the server was able to accomplish
the move, right after, the test will assert that C2 is the stream was
placed in the correct cluster



Signed-off-by: Alberto Ricart <alberto@synadia.com>

server/jetstream_jwt_test.go

@@ -345,10 +345,9 @@ func TestJetStreamJWTMove(t *testing.T) {
 		require_NoError(t, err)
 
 		// Perform actual move
-		ci, err = js.UpdateStream(&nats.StreamConfig{Name: "MOVE-ME", Replicas: replicas,
+		_, err = js.UpdateStream(&nats.StreamConfig{Name: "MOVE-ME", Replicas: replicas,
 			Placement: &nats.Placement{Tags: []string{"cloud:C2-tag"}}})
 		require_NoError(t, err)
-		require_Equal(t, ci.Cluster.Name, "C1")
 
 		sc.clusterForName("C2").waitOnStreamLeader(aExpPub, "MOVE-ME")