RFR(XXS) : 8209549 : remove VMPropsExt from TEST.ROOT

[Igor Ignatyev]

http://cr.openjdk.java.net/~iignatyev//8209549/webrev.00/index.html
> 2 lines changed: 0 ins; 0 del; 2 mod;

Hi all,

could you please review this tiny patch which removes unused (and actually non-existed) file from requires.extraPropDefns and simplifies paths in requires.extraPropDefns and requires.extraPropDefns.bootlibs?

webrev: http://cr.openjdk.java.net/~iignatyev//8209549/webrev.00/index.html
testing: jdk/tier1

Thanks,
-- Igor