Remove obsolete license classifier

Author: zyv

pyproject.toml

@@ -10,7 +10,6 @@ license = "MIT"
 classifiers = [
     "Development Status :: 5 - Production/Stable",
     "Intended Audience :: Developers",
-    "License :: OSI Approved :: MIT License",
     "Programming Language :: Python :: 3",
     "Programming Language :: Python :: 3 :: Only",
     "Programming Language :: Python :: 3.11",