officially deprecate the flake8 hook

.pre-commit-hooks.yaml

diff --git a/.pre-commit-hooks.yaml b/.pre-commit-hooks.yaml
index 7a3b380..666a245 100644
--- a/.pre-commit-hooks.yaml
+++ b/.pre-commit-hooks.yaml
@@ -138,7 +138,7 @@
     description: 'Add # -*- coding: utf-8 -*- to the top of python files'
     types: [python]
 -   id: flake8
-    name: Flake8
+    name: Flake8 (deprecated, use gitlab.com/pycqa/flake8)
     description: This hook runs flake8.
     entry: flake8
     language: python

README.md

diff --git a/README.md b/README.md
index 30f712d..ee62f2d 100644
--- a/README.md
+++ b/README.md
@@ -107,9 +107,6 @@
 You must provide list of target files as input to it.
 Note that this hook WILL remove blank lines and does NOT respect any comments.
 
-#### `flake8`
-Run flake8 on your python files.
-
 #### `forbid-new-submodules`
 Prevent addition of new git submodules.
 
@@ -174,6 +171,7 @@
 - `autopep8-wrapper`: instead use
   [mirrors-autopep8](https://github.com/pre-commit/mirrors-autopep8)
 - `pyflakes`: instead use `flake8`
+- `flake8`: instead use [upstream flake8](https://gitlab.com/pycqa/flake8)
 
 ### As a standalone package