code: def remove_op_callback(op_callback):
      """Remove an already-added op callback.
  
      Args:
        op_callback: The op callback to be removed.
  
      Raises:
        KeyError: If `op_callback` has not been registered using `add_op_callback()`
          before.
      """
      ctx = context.context()
      ctx.remove_op_callback(op_callback)
      if ctx.executing_eagerly() and not ctx.op_callbacks:
          # Undo monkey-patch of execute.execute if there are no more callbacks.
          execute.execute = execute.quick_execute
  
imports: from tensorflow.python.eager import context
  from tensorflow.python.eager import execute
label_desc: Use image node_id 3 for calling a global function with example usage: remove_op_callback(op_callback) without return types