HBASE-23974 [Flakey Tests] Allow that server may not yet be cleared from DeadServers in TestHBCKSCP

hbase-server/src/test/java/org/apache/hadoop/hbase/master/procedure/TestHBCKSCP.java

@@ -154,7 +154,6 @@ public class TestHBCKSCP extends TestSCPBase {
     assertNotEquals(rsServerName, serverName);
     // Make sure no mention of old server post SCP.
     assertFalse(searchMeta(master, rsServerName));
-    assertFalse(master.getServerManager().getDeadServers().isDeadServer(rsServerName));
   }
 
   /**