FIX: remove incorrect license classifier

Author: agoose77

pyproject.toml

@@ -14,7 +14,6 @@ classifiers = [
     "Development Status :: 5 - Production/Stable",
     "Framework :: Sphinx :: Extension",
     "Intended Audience :: Developers",
-    "License :: OSI Approved :: MIT License",
     "Programming Language :: Python :: 3",
     "Programming Language :: Python :: 3 :: Only",
     "Programming Language :: Python :: 3.9",