8215015: [TESTBUG] remove unneeded -Xfuture option from tests
Summary: Remove the option from the tests
Reviewed-by: lfoltan, coleenp
^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/.*