[CodeStyle][py2] remove paddle.compat cn docs (#5376)

* remove compat API docs

* remove compat labels

* remove compat in docs

Author: SigureMo

docs/api/api_label

@@ -11,12 +11,6 @@ paddle.callbacks.ReduceLROnPlateau	.. _api_paddle_callbacks_ReduceLROnPlateau:
 paddle.callbacks.Callback	.. _api_paddle_callbacks_Callback:
 paddle.callbacks.VisualDL	.. _api_paddle_callbacks_VisualDL:
 paddle.callbacks.ModelCheckpoint	.. _api_paddle_callbacks_ModelCheckpoint:
-paddle.compat.to_text	.. _api_paddle_compat_to_text:
-paddle.compat.to_bytes	.. _api_paddle_compat_to_bytes:
-paddle.compat.floor_division	.. _api_paddle_compat_floor_division:
-paddle.compat.get_exception_message	.. _api_paddle_compat_get_exception_message:
-paddle.compat.long_type	.. _api_paddle_compat_long_type:
-paddle.compat.round	.. _api_paddle_compat_round:
 paddle.is_compiled_with_xpu	.. _api_paddle_is_compiled_with_xpu:
 paddle.is_compiled_with_npu	.. _api_paddle_is_compiled_with_npu:
 paddle.set_device	.. _api_paddle_set_device:

docs/api/paddle/compat/floor_division_cn.rst

@@ -51,7 +51,6 @@ Paddle 使用 clang-format 来调整 C/C++ 源代码格式，请确保 clang-for
 docs/api
 |--paddle                      # 存放中文 API 文档，文件名为 api_name_cn.rst,路径为暴露的路径
 |    |--amp
-|    |--compat
 |    |--device
 ...
 |    |--utils