Remove old method of creating a release from README.

Author: pavelhoral

README.md

@@ -1,13 +1,3 @@
 # PGP Whitelist
 
 This repo contains shared whitelist of PGP keys used in dependency verification by Wren Security projects.
-
-
-## Creating Release
-
-```
-read -p "Enter new version: " VERSION
-git tag -s $VERSION -m "Release $VERSION"
-git push --tags
-mvn deploy -Psign
-```