Remove old Mypy config.

Author: HexDecimal

setup.cfg

@@ -7,25 +7,3 @@ test=pytest
 [flake8]
 ignore = E203 W503 TYP001
 max-line-length = 130
-
-[mypy]
-python_version = 3.8
-warn_unused_configs = True
-show_error_codes = True
-disallow_subclassing_any = True
-disallow_any_generics = True
-disallow_untyped_calls = True
-disallow_untyped_defs = True
-disallow_incomplete_defs = True
-check_untyped_defs = True
-disallow_untyped_decorators = True
-no_implicit_optional = True
-warn_redundant_casts = True
-warn_unused_ignores = True
-warn_return_any = True
-implicit_reexport = False
-strict_equality = True
-exclude = (build/|venv/|libtcod/|docs/|distribution/|termbox/|samples_libtcodpy.py)
-
-[mypy-numpy]
-ignore_missing_imports = True