Follow-up to r1540539 after kkolinko review

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc7.0.x/trunk@1540642 13f79535-47bb-0310-9956-ffa450edef68
Remove unnecessary setting of property that causes problems whe using SPNEGO with IBM JDKs.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc7.0.x/trunk@1540649 13f79535-47bb-0310-9956-ffa450edef68