try to fix license files not be accepting by twine

Author: electronstudio

setup.py

@@ -33,7 +33,6 @@ def has_ext_modules(foo):
     url="https://github.com/electronstudio/raylib-python-cffi",
     author="Electron Studio",
     author_email="[email protected]",
-    license_files = ['LICENSE'],
     classifiers=[
         "Programming Language :: Python :: 3",
         "Programming Language :: Python :: 3.13",