remove django 2.2 from classifier

Author: auvipy

setup.py

@@ -41,7 +41,6 @@ def _pyimp():
     Programming Language :: Python :: Implementation :: CPython
     Programming Language :: Python :: Implementation :: PyPy
     Framework :: Django
-    Framework :: Django :: 2.2
     Framework :: Django :: 3.2
     Framework :: Django :: 4.0
     Operating System :: OS Independent