docstr: Remove a registered regexp -> label mapping given by label.
  
  Args:
      labels: A list of labels or a single label as strings.
docstr_tok: ["Remove","a","registered","regexp","-",">","label","mapping","given","by","label",".","Args",":","labels",":","A","list","of","labels","or","a","single","label","as","strings","."]
code: def remove_labels(self, labels: Union[List[str], str]):
      """Remove a registered regexp -> label mapping given by label.
  
      Args:
          labels: A list of labels or a single label as strings.
      """
      labels = self._listify(labels)
  
      for label in labels:
          if not self._regexp_mapping.get(label):
              continue
          self._regexp_mapping.pop(label)
  
file_path: flair/flair/models/regexp_tagger.py
imports: import re
  import typing
  from dataclasses import dataclass, field
  from typing import Dict, List, Tuple, Union
  from flair.data import Sentence, Span, Token
label_desc: Use image node_id 4 for calling the RegexpTagger obj's underlying member method code with example usage: obj.remove_labels(labels) without return types