ARTEMIS-1763 - Remove 'quick check' before quorum

https://issues.apache.org/jira/browse/ARTEMIS-1763

artemis-server/src/main/java/org/apache/activemq/artemis/core/server/cluster/qourum/SharedNothingBackupQuorum.java

@@ -288,11 +288,6 @@ public class SharedNothingBackupQuorum implements Quorum, SessionFailureListener
 
       synchronized (voteGuard) {
          while (!decision && voteAttempts++ < voteRetries) {
-            // a quick check to see if the live actually is dead
-            if (quorumManager.checkLive(liveTransportConfiguration)) {
-               //the live is still alive so we best not failover
-               return false;
-            }
             //the live is dead so lets vote for quorum
             QuorumVoteServerConnect quorumVote = new QuorumVoteServerConnect(size, targetServerID);