creating branch in the previous step conflicts (#1269)

the create pull request action expects to create its
own branch rather than the previous step creating
one

Author: EliotJones

.github/workflows/prepare_release_pr.yml

@@ -26,7 +26,6 @@ jobs:
           git config user.name "github-actions"
           git config user.email "github-actions@github.com"
 
-          git checkout -b release/$newVer
           git commit -am "Release $newVer"
 
       - name: Create Pull Request