remove 3.7 from setup.py

Author: yck011522

setup.py

@@ -40,7 +40,6 @@ def read(*names, **kwargs):
         "Operating System :: Microsoft :: Windows",
         "Programming Language :: Python",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",