code: def delete_local_variable(self, onnx_name):
          '''
          Remove the variable whose onnx_name is the input onnx_name
          '''
          if onnx_name not in self.onnx_variable_names or onnx_name not in self.variables:
              raise RuntimeError('The variable to be removed not found')
          self.onnx_variable_names.discard(onnx_name)
          raw_name = self.variables[onnx_name].raw_name
          self.variable_name_mapping[raw_name].remove(onnx_name)
          del self.variables[onnx_namef delete_local_variable(self, onnx_name):
          '''
          Remove the variable whose onnx_name is the input onnx_name
          '''
          if onnx_name not in self.onnx_variable_names or onnx_name not in self.variables:
              raise RuntimeError('The variable to be removed not found')
          self.onnx_variable_names.discard(onnx_name)
          raw_name = self.variables[onnx_name].raw_name
          self.variable_name_mapping[raw_name].remove(onnx_name)
          del self.variables[onnx_name]
docs: Remove the variable whose onnx_name is the input onnx_name