Delete code leftover from old fixes

The fix for JDK-4893408 adds a special code to handle the "PYCC.pf" color profile for the "kernel java":
https://bugs.openjdk.java.net/browse/JDK-4893408?focusedCommentId=12284308&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-12284308
The "kernel java" support was removed in jdk7 in JDK-7016724 but the special code in the ICC_Profile.java still exists.

After the fix for JDK-8175984 a few methods became unused:
 - CMSManager#freeProfile()
 - ProfileDeferralMgr#unregisterDeferral()