RFR(T) : 8244384 : @requires-related clean up in gc/metaspace/ tests

[Kim Barrett]

> On May 4, 2020, at 8:31 PM, Igor Ignatyev <igor.ignatyev at oracle.com> wrote:
> 
> http://cr.openjdk.java.net/~iignatyev//8244384/webrev.00
>> 19 lines changed: 1 ins; 9 del; 9 mod; 
> 
> Hi all,
> 
> could you please review this trivial clean up in two gc/metaspace/ tests?
> from JBS:
>> test/hotspot/jtreg/gc/metaspace/CompressedClassSpaceSizeInJmapHeap.java and TestCapacityUntilGCWrapAround.java can be cleaned up a bit: 
>> - TestCapacityUntilGCWrapAround.java can use `@requires vm.bits` to be executed on only on suitable platforms 
>> - usage of jdk.test.lib.Platform can be removed from both tests
> 
> JBS: https://bugs.openjdk.java.net/browse/JDK-8244384
> webrev: http://cr.openjdk.java.net/~iignatyev//8244384/webrev.00
> 
> Thanks,
> -- Igor

Looks good.