code: def delete(cls, repo, path):
          
          full_ref_path = cls.to_full_path(path)
          abs_path = osp.join(repo.common_dir, full_ref_path)
          if osp.exists(abs_path):
              os.remove(abs_path)
          else:
              # check packed refs
              pack_file_path = cls._get_packed_refs_path(repo)
              try:
                  with open(pack_file_path, 'rb') as reader:
                      new_lines = []
                      made_change = False
                      dropped_last_line = False
                      for line in reader:
                          # keep line if it is a comment or if the ref to delete is not
                          # in the line
                          # If we deleted the last line and this one is a tag-reference object,
                          # we drop it as well
                          line = line.decode(defenc)
                          if (line.startswith('#') or full_ref_path not in line) and \
                                  (not dropped_last_line or dropped_last_line and not line.startswith('^')):
                              new_lines.append(line)
                              dropped_last_line = False
                              continue
                          # END skip comments and lines without our path
  
                          # drop this line
                          made_change = True
                          dropped_last_line = True
  
                  # write the new lines
                  if made_change:
                      # write-binary is required, otherwise windows will
                      # open the file in text mode and change LF to CRLF !
                      with open(pack_file_path, 'wb') as fd:
                          fd.writelines(l.encode(defenc) for l in new_lines)
  
              except (OSError, IOError):
                  pass  # it didn't exist at all
  
          # delete the reflog
          reflog_path = RefLog.path(cls(repo, full_ref_path))
          if osp.isfile(reflog_path):
              os.remove(reflog_path)
docs: Delete the reference at the given path
  
          :param repo:
              Repository to delete the reference from
  
          :param path:
              Short or full path pointing to the reference, i.e. refs/myreference
              or just "myreference", hence 'refs/' is implied.
              Alternatively the symbolic reference to be deleted