Remove auto-merge label usage (Azure#20922)

Author: weshaggard

eng/pipelines/templates/jobs/archetype-go-release.yml

@@ -98,5 +98,4 @@ stages:
                       PRBranchName: increment-package-version-${{ parameters.ServiceDirectory }}-$(Build.BuildId)
                       CommitMsg: "Increment package version after release of ${{ parameters.ServiceDirectory }}"
                       PRTitle: "Increment version for ${{ parameters.ServiceDirectory }} releases"
-                      PRLabels: "auto-merge"
                       CloseAfterOpenForTesting: '${{ parameters.TestPipeline }}'