chore(mypy): Remove unused ignore_missing_imports overrides

why: sphinx_fonts and test_sphinx_fonts are no longer local modules.
what:
- Remove sphinx_fonts ignore_missing_imports override
- Remove tests.docs._ext.test_sphinx_fonts disable_error_code override

Author: tony

pyproject.toml

@@ -119,14 +119,6 @@ files = [
   "tests",
 ]
 
-[[tool.mypy.overrides]]
-module = ["sphinx_fonts"]
-ignore_missing_imports = true
-
-[[tool.mypy.overrides]]
-module = ["tests.docs._ext.test_sphinx_fonts"]
-disable_error_code = ["arg-type"]
-
 [tool.coverage.run]
 branch = true
 parallel = true