chore: Remove unused file

mypy.ini

-[mypy]
-python_version = 3.9
-warn_unused_configs = True
-disallow_incomplete_defs = True
-allow_redefinition = True
-
-[mypy-dbus.*]
-ignore_missing_imports = True
-
-[mypy-win32file.*]
-ignore_missing_imports = True
-
-[mypy-win32con.*]
-ignore_missing_imports = True
-
-[mypy-pywintypes.*]
-ignore_missing_imports = True
-
-[mypy-OpenSSL.*]
-ignore_missing_imports = True
-
-[mypy-encodings.*]
-ignore_missing_imports = True
-
-[mypy-precis_i18n.*]
-ignore_missing_imports = True
-
-[mypy-winsound.*]
-ignore_missing_imports = True
-
-[mypy-PIL.*]
-ignore_missing_imports = True
-
-[mypy-netifaces.*]
-ignore_missing_imports = True
-
-[mypy-keyring.*]
-ignore_missing_imports = True
-
-[mypy-ossaudiodev.*]
-ignore_missing_imports = True
-
-[mypy-css_parser.*]
-ignore_missing_imports = True
-
-[mypy-distro.*]
-ignore_missing_imports = True
-
-[mypy-IPython.*]
-ignore_missing_imports = True
-
-[mypy-traitlets.*]
-ignore_missing_imports = True
-
-[mypy-pygments.*]
-ignore_missing_imports = True
-
-[mypy-cairo.*]
-ignore_missing_imports = True
-
-[mypy-packaging.version.*]
-ignore_missing_imports = True
-
-[mypy-gajim.gui.*]
-ignore_missing_imports = True