Simplify bind and unbind on stop

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1560164 13f79535-47bb-0310-9956-ffa450edef68
Simplify bind and unbind on start

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1560165 13f79535-47bb-0310-9956-ffa450edef68
Remove unnecessary code

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1560177 13f79535-47bb-0310-9956-ffa450edef68