8213469: Remove/fix leftovers from JDK-8213384: Move G1/C2 barrier verification into G1BarrierSetC2
Reviewed-by: kvn, roland
^build/
^dist/
^.idea/
nbproject/private/
^webrev
^.src-rev$
^.jib/
\.DS_Store
\.metadata/
\.recommenders/
test/nashorn/script/external
test/nashorn/lib
NashornProfile.txt
.*/JTreport/.*
.*/JTwork/.*
.*/.git/.*