(chore) Drop support for eol Python versions

Author: kbdharun

setup.py

@@ -47,8 +47,6 @@
         "Operating System :: POSIX :: SunOS/Solaris",
         "Operating System :: MacOS :: MacOS X",
         "Operating System :: Microsoft :: Windows",
-        "Programming Language :: Python :: 3.6",
-        "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",