code: def remove_patch(cls, patch_name):
          
          try:
              os.unlink(cls._get_patch_path(patch_name))
          except:
              raise StashException("patch '%s' does not exist" % patch_name)
docs: Removes patch *patch_name* from the stash (in case it exists).
  
          :raises: :py:exc:`~stash.exception.StashException` in case *patch_name* does not exist.