8228630: Remove always true parameter to NoSafepointVerifier
Summary: Also remove NoGCVerifier since NoSafepointVerifier covers GC checking when not already at a safepoint and is a stronger check.
Reviewed-by: kbarrett, dholmes
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nbproject/private/
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test/nashorn/script/external
test/nashorn/lib
NashornProfile.txt
**/JTreport/**
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