Prune the list of known failing ART run-tests in `regen-test-files`.

These tests are already considered as non-runnable because they have a
(not-yet-handled) custom `run` script, so there's no need to also have
them in the explicit list of known failing tests.

Test: Run `art/test/utils/regen-test-files` and check there is no
      difference in generated files
Bug: 147812905
Change-Id: Ib0abba74bd9c636606cda44f6d2ccc113400a8f0
1 file changed