Remove test code

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1487822 13f79535-47bb-0310-9956-ffa450edef68
Refactor write event registration for non-blocking IO. Unit tests pass on Windows. Need to check other platforms.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1487824 13f79535-47bb-0310-9956-ffa450edef68