RFR(M) : 8210732 : remove jdk.testlibrary.Utils

[Igor Ignatyev]

http://cr.openjdk.java.net/~iignatyev//8210732/webrev.00/index.html
> 478 lines changed: 3 ins; 319 del; 156 mod; 

Hi all,

could you please review the next clean up in jdk testlibrary which removes jdk.testlibrary.Utils class?

webrev: http://cr.openjdk.java.net/~iignatyev//8210732/webrev.00/index.html
testing: tier[1-3] + :jdk_svc,:jdk_security_infra
JBS: https://bugs.openjdk.java.net/browse/JDK-8210732

Thanks,
-- Igor