code: def remove(self, variables: Union[Iterable[str], Dict[str, str]]=None):
          
          keys = list(variables.keys()) if isinstance(variables, Dict) else variables     # type: Iterable[str]
          for key in keys:
              variable = self._project.variables.get(key)
              if isinstance(variables, Dict):
                  if variables[key] != variable.value:
                      continue
              variable.delete()
docs: Removes the given variables. Will only remove a key if it has the given value if the value has been defined.
          :param variables: the variables to remove