setup.py: drop Bluetooth classifier
PyPI rejects this classifier.
@@ -99,7 +99,6 @@ setup(
"Development Status :: 4 - Beta",
"Framework :: AsyncIO",
"Intended Audience :: Developers",
- "Topic :: System :: Hardware :: Bluetooth",
"License :: OSI Approved :: MIT License",
"Natural Language :: English",
"Operating System :: Microsoft :: Windows :: Windows 10",
