removed support for python 3.7 (attempt 2)

Author: kaseylove

setup.py

@@ -24,7 +24,6 @@
     },
     classifiers=[
         "Development Status :: 5 - Production/Stable",
-        "Programming Language :: Python :: 3",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",