Removes the check for full readiness of 3 replicas

In the ci environment the amount of time between 3 pods being created
and all being ready seems highly variable.  Also since we currently lack
the status information to determine if a deployment is not progressing,
it's best just to remove this check.  The latter check asserting full
readiness of 2 replicas will suffice.

Closes #20888

operator/src/test/java/org/keycloak/operator/testsuite/integration/ClusteringTest.java

@@ -92,11 +92,6 @@ public class ClusteringTest extends BaseOperatorTest {
                 .ignoreExceptions()
                 .untilAsserted(() -> assertThat(kcPodsSelector.list().getItems().size()).isEqualTo(3));
 
-        Awaitility.await()
-                .atMost(Duration.ofSeconds(60))
-                .ignoreExceptions()
-                .untilAsserted(() -> assertThat(crSelector.scale().getStatus().getReplicas()).isEqualTo(3));
-
         // when scale it down to 2
         crSelector.scale(2);
         assertThat(crSelector.scale().getSpec().getReplicas()).isEqualTo(2);