Remove sun.... libcore classes from light grey/vendor lists

Removes all the sun... libcore classes from the light grey/vendor
lists as they are now using UnsupportedAppUsage annotation.

This was tested by making and then manually checking that the generated
out/target/common/obj/PACKAGING/hiddenapi-light-greylist.txt was the
same (after sorting) before and after this change.

Test: see above
Bug: 117818301
Change-Id: I8dadc9215e929c5047fdfe8241c430544e963c19
ge-Id: I2a9ed3fbfb0c703eafcf431b93f8a419c5ec83a3