Remove Wimp/XFail marking from a test that passes since switching to single-db.
Remove Wimp/XFail marking from a test that passes since switching to
single-db.

* subversion/tests/cmdline/merge_tests.py
  (is_fs_case_insensitive): Remove import.

  (test_list): Following up on the switch to single-db, remove Wimp marking
    from committed_case_only_move_and_revert as this test succeeds on case
    insensitive filesystems now.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion