Revert "Release v202 (heroku#1260)"

This reverts commit 9b19fa2.

This was done to unblock Zenput deployments. See https://zenput.atlassian.net/browse/ZP-7880

Author: davidofwatkins

CHANGELOG.md

@@ -2,9 +2,6 @@
 
 ## Unreleased
 
-
-## v202 (2021-11-01)
-
 - Update pip from 20.2.4 to: ([#1259](https://github.com/heroku/heroku-buildpack-python/pull/1259))
   - 20.3.4 for Python 2.7 and 3.5
   - 21.3.1 for Python 3.6+