stop testing flake8<7, remove now unneeded stub files

.github/workflows/ci.yml

@@ -40,12 +40,10 @@ jobs:
                   python-version: ${{ matrix.python-version }}
             - name: Install dependencies
               run: python -m pip install --upgrade pip setuptools tox
-            - name: Run tests with flake8_6
-              run: python -m tox -e flake8_6
-            - name: Run tests with flake8_7+
-              run: python -m tox -e flake8_7
+            - name: Run tests with flake8
+              run: python -m tox -e flake8
             - name: Run tests without flake8
-              run: python -m tox -e noflake8 -- --no-cov
+              run: python -m tox -e "" -- --no-cov
 
     slow_tests:
         runs-on: ubuntu-latest
@@ -60,9 +58,9 @@ jobs:
             - name: Install dependencies
               run: |
                   python -m pip install --upgrade pip setuptools tox
-                  python -m tox --notest --recreate -e flake8_7
+                  python -m tox --notest --recreate -e flake8
             - name: Run tests
-              run: python -m tox -e flake8_7 -- --onlyfuzz --no-cov -n auto
+              run: python -m tox -e flake8 -- --onlyfuzz --no-cov -n auto
 
     check_release:
         runs-on: ubuntu-latest

tox.ini

@@ -1,15 +1,15 @@
 # The test environment and commands
 [tox]
 # default environments to run without `-e`
-envlist = py{39,310,311,312,313}-{flake8_6,flake8_7},noflake8
+# trailing comma gives the empty environ - i.e. no flake8 default python
+envlist = py{39,310,311,312,313}-{flake8},
 
 # create a default testenv, whose behaviour will depend on the name it's called with.
 # for CI you can call with `-e flake8_6,flake8_7` and let the CI handle python version
 [testenv]
 description = Runs pytest, optionally with posargs
 deps =
-    flake8_7: flake8>=7.0
-    flake8_6: flake8>=6.0, <7.0
+    flake8: flake8
     pytest
     pytest-cov  # to make it easy to pass --no-cov
     coverage