Merge #3184

3184: Remove redundant variable assignment r=mergify[bot] a=strugee

## What type of PR?

Bugfix

## What does this PR do?

See diff; this variable is set again two lines down

### Related issue(s)

None

## Prerequisites
Before we can consider review and merge, please make sure the following list is done and checked.
If an entry in not applicable, you can check it or remove it from the list.

- [x] In case of feature or enhancement: documentation updated accordingly
- [x] Unless it's docs or a minor change: add [changelog](https://mailu.io/master/contributors/workflow.html#changelog) entry file.


Co-authored-by: AJ Jordan <alex@strugee.net>

.github/workflows/multiarch.yml

@@ -62,7 +62,6 @@ jobs:
         shell: bash
         run: |
           version=$( git tag --sort=version:refname --list "${{ env.MAILU_VERSION }}.*" | tail -1  );root_version=${version%.*};patch_version=${version##*.};if [ "$patch_version" == "" ]; then pinned_version=${{ env.MAILU_VERSION }}.0; else pinned_version=$root_version.$(expr $patch_version + 1); fi;echo "PINNED_MAILU_VERSION=$pinned_version" >> $GITHUB_ENV
-          echo "RELEASE=true" >> $GITHUB_ENV
           echo "DEPLOY=true" >> $GITHUB_ENV
           echo "RELEASE=true" >> $GITHUB_ENV
       - name: Derive PINNED_MAILU_VERSION and DEPLOY/RELEASE for staging