Fix classifiers

The license classifier exists but is not meant to be used anymore,
I'll probably make this mistake again.

Author: HexDecimal

pyproject.toml

@@ -48,7 +48,6 @@ classifiers = [
     "Environment :: MacOS X",
     "Environment :: X11 Applications",
     "Intended Audience :: Developers",
-    "License :: OSI Approved :: BSD License",
     "Natural Language :: English",
     "Operating System :: POSIX",
     "Operating System :: MacOS :: MacOS X",