<Swing Dev> RFR; 8211031: Remove un-needed qualified export to java.desktop from java.base on macos

[Philip Race]

Bug: https://bugs.openjdk.java.net/browse/JDK-8211031
webrev: http://cr.openjdk.java.net/~prr/8211031/

Removing some obsolete code which is the reason for a qualified export
from java.base to java.desktop. I also cleaned up some commented out 
debugging code.

See the bug evaluation for more details.

-phil.