Remove 'sphinx.util.typing' from mypy whitelist (#11397)

Author: danieleades

pyproject.toml

@@ -347,7 +347,6 @@ module = [
     "sphinx.util.cfamily",
     "sphinx.util.docfields",
     "sphinx.util.docutils",
-    "sphinx.util.typing",
     "sphinx.writers.latex",
     "sphinx.writers.text",
     "sphinx.writers.xml",