WFLY-3394 remove IBM exclude profile from secman testsuite module

JIRA: https://issues.jboss.org/browse/WFLY-3394

IBM JDK exclude is not needed in WFLY, because only version 1.6 of IBM JDK had unsupported `policy.provider` value configured in `${JAVA_HOME}/jre/lib/security/java.security`.

IBM Java 7 and newer have the correct (supported) default value of `policy.provider`.