Remove the ruff linter

.github/workflows/codespell.yml

@@ -0,0 +1,15 @@
+# This Action looks for typos in the codebase using codespell
+# and intuitive GitHub Annotations to contributors.
+# https://github.com/codespell-project/codespell#readme
+name: codespell
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+jobs:
+  codespell:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - uses: codespell-project/actions-codespell@v2

pyproject.toml

@@ -4,24 +4,3 @@ build-backend = "setuptools.build_meta"
 
 [tool.codespell]
 ignore-words-list = "acount,crate,fo,ois,ot,seh"
-
-[tool.ruff]
-extend-ignore = ["E702", "F401", "F541"]
-
-[tool.ruff.per-file-ignores]
-"docs/examples/debug-example.py" = ["E402"]
-"docs/examples/tests.py" = ["E402", "F811", "F841"]
-"test/check_py27_compat.py" = ["E722"]
-"test/debug/test_charptr.py" = ["E703"]
-"test/support.py" = ["E401"]
-"test/test_call.py" = ["E703"]
-"test/test_capsule.py" = ["E711"]
-"test/test_capsule_legacy.py" = ["F811"]
-"test/test_hpyerr.py" = ["F841"]
-"test/test_hpyfield.py" = ["F811"]
-"test/test_hpylong.py" = ["E701", "E712", "F841"]
-"test/test_hpytype.py" = ["E701", "F841"]
-"test/test_hpytype_legacy.py" = ["F841"]
-"test/test_hpyunicode.py" = ["E721", "E722"]
-"test/test_slots.py" = ["F841"]
-"test/test_support.py" = ["F811"]