Remove AlexWaygood as a flake8-pyi codeowner (#23347)

Author: AlexWaygood

.github/CODEOWNERS

@@ -11,9 +11,6 @@
 /crates/ruff_python_parser/ @MichaReiser @dhruvmanila
 /crates/ruff_annotate_snippets/ @BurntSushi
 
-# flake8-pyi
-/crates/ruff_linter/src/rules/flake8_pyi/ @AlexWaygood
-
 # Script for fuzzing the parser/ty etc.
 /python/py-fuzzer/ @AlexWaygood