RFR: 8026847 [TESTBUG] gc/g1/TestSummarizeRSetStats* tests launch 32bit jvm with UseCompressedOops

[Andrey Zakharov]

Hi, all.
"UseCompressedOops" options is being used In 
gc/g1/TestSummarizeRSetStats* tests.
But it doesn't needed for those tests. Also I have asked Thomas Schatzl 
about this options and he confirmed useless.
So here is simple patch - just removing.

webrev:
http://cr.openjdk.java.net/~fzhinkin/azakharov/8026847/webrev.00/
bug:
https://bugs.openjdk.java.net/browse/JDK-8026847

I have tested it locally for 32 and 64bits JDK and also in Aurora (batch 
514909.ute.hs_jtreg.accept.full).
Please, review it.
Thanks.