Remove old debug code

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1516841 13f79535-47bb-0310-9956-ffa450edef68
Reviewing NIO vs APR investigating unit test failure on Linux and OSX
Align code. Consistently generate an error message if a write of a 100 continue response fails

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1516845 13f79535-47bb-0310-9956-ffa450edef68