Remove the Trove classifier after all

* pip-licenses is not maintained and has been forked into pip-licenses-cli
  to support PEP 639.
* pip 25.0 supports PEP 639.
* I cannot find evidence that ScanCode toolkit is affected by PEP 639

Author: DimitriPapadopoulos

pyproject.toml

@@ -23,7 +23,6 @@ classifiers = [
     "Development Status :: 5 - Production/Stable",
     "Environment :: Console",
     "Intended Audience :: Developers",
-    "License :: OSI Approved :: MIT License",  # for compatibility with tooling such as pip-licenses
     "Operating System :: OS Independent",
     "Programming Language :: Python",
     "Programming Language :: Python :: 3.7",