Remove trailing space, fixes checkstyle error.


git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc8.0.x/trunk@1645243 13f79535-47bb-0310-9956-ffa450edef68
Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=57347
AJP response contains wrong status reason phrase.

Backport of r1645247 from trunk.


git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc8.0.x/trunk@1645248 13f79535-47bb-0310-9956-ffa450edef68