RFR(S/T) : 8243618 : compiler/rtm/cli tests can be run w/o WhiteBox

[Igor Ignatyev]

http://cr.openjdk.java.net/~iignatyev/8243618/webrev.00/
> 73 lines changed: 0 ins; 56 del; 17 mod;


Hi all,

could you please review this small (and hopefully trivial) clean up in compiler/rtm/cli tests?
from JBS:
> JDK-8181124 replaced usages of compiler.testlibrary.rtm.predicate (which depended on WhiteBox API) w/ @requires, so now compiler/rtm/cli don't use WhiteBox API and can be run w/o it and given the actual testing is done the spawned JVMs by tests, the test code can also be run in driver mode.

JBS: https://bugs.openjdk.java.net/browse/JDK-8243618
webrev:
testing: the affected tests

Thanks,
-- Igor