Remove unused code.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1580072 13f79535-47bb-0310-9956-ffa450edef68
Remove more unused code.
Reduce visibility of static fields

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1580073 13f79535-47bb-0310-9956-ffa450edef68