In AbstractReplicatedMap#finalize, remove rpcChannel from channel Listener of group channel before sending MapMessage.MSG_STOP message.
This prevent that the node that sent the MapMessage.MSG_STOP by normal shutdown is added to member map again by ping at heartbeat thread in the node that received the MapMessage.MSG_STOP.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1550391 13f79535-47bb-0310-9956-ffa450edef68