Remove distribution instructions, handled by github actions now

Author: ckcollab

README.md

@@ -23,16 +23,6 @@ INSTALLED_APPS = (
 )
 ```
 
-## distributing and releasing
-
-```bash
-# Update version in setup.cfg
-./setup.py sdist
-twine upload dist/*
-# Commit and push the version update in setup.cfg
-# Publish vX.X.X release on GitHub with a description.
-```
-
 ## tests
 
 ```bash