Update code-quality-checks.yml: remove workaround

see python/mypy#17485 or python/mypy#10768 for more information

Signed-off-by: wyattscarpenter <wyattscarpenter@gmail.com>

Author: wyattscarpenter

.github/workflows/code-quality-checks.yml

@@ -211,6 +211,4 @@ jobs:
       #              mypy the code
       #----------------------------------------------
       - name: Mypy
-        run: |
-          mkdir .mypy_cache # Workaround for bad error message "error: --install-types failed (no mypy cache directory)"; see https://github.com/python/mypy/issues/10768#issuecomment-2178450153
-          poetry run mypy --install-types --non-interactive src
+        run: poetry run mypy --install-types --non-interactive src