code: def cmd_remove_label(docid, label_name):
      
      dsearch = get_docsearch()
      doc = dsearch.get(docid)
      if doc is None:
          raise Exception(
              "Document {} not found. Cannot remove label from it".format(
                  docid
              )
          )
  
      for clabel in dsearch.label_list:
          if clabel.name == label_name:
              label = clabel
      else:
          raise Exception("Unknown label {}".format(label_name))
  
      dsearch.remove_label(doc, label)
      verbose("Label {} removed from document {}".format(label_name, docid))
      reply({
          "docid": docid,
          "labels": [l.name for l in doc.labels],
      })
docs: Arguments: <document_id> <label_name>
  
      Remove a label from a document.
  
      Note that if the document was the last one to use the label,
      the label may disappear entirely from Paperwork.
  
      Possible JSON replies:
          --
          {
              "status": "error", "exception": "yyy",
              "reason": "xxxx", "args": "(xxxx, )"
          }
          --
          {
              "status": "ok",
              "docid": "xxxx",
              "labels": ["aaa", "bbb", "ccc"],  # after deletion
          }