Hermes's testsuite marks some tests in test262, flow, esprima and
mjsunit as tests not to run for one reason or another (e.g. unsupported
features, etc). This commit removes those tests from the seed corpus by
removing the tests explicit marked to be skipped in the `SKIP_LIST` and
`PERMANENT_SKIP_LIST` in `hermes/utils/testsuite/testsuite_skiplist.py`,
removing tests in mjsunit that use v8 runtime functions, and excludes
tests that have keywords from `UNSUPPORTED_FEATURES` and
`PERMANENT_UNSUPPORTED_FEATURES` in
`hermes/utils/testsuite/testsuite_skiplist.py` in the file contents or
in the path name.
0xedward