Remove usage of auto-merge label which is going away (Azure#35177)

Author: JimSuplizio

eng/pipelines/templates/stages/archetype-java-release-batch.yml

@@ -289,7 +289,6 @@ stages:
                       PRBranchName: increment-package-version-${{ parameters.ServiceDirectory }}-$(Build.BuildId)
                       CommitMsg: "Increment package versions for ${{ parameters.ServiceDirectory }} releases"
                       PRTitle: "Increment versions for ${{ parameters.ServiceDirectory }} releases"
-                      PRLabels: "auto-merge"
                       CloseAfterOpenForTesting: '${{ parameters.TestPipeline }}'
 
         - deployment: PublishDocsMs

eng/pipelines/templates/stages/archetype-java-release-patch.yml

@@ -214,7 +214,6 @@ stages:
                       PRBranchName: increment-package-version-patch-release-$(Build.BuildId)
                       CommitMsg: "Increment package versions for patch releases"
                       PRTitle: "Increment versions for patch releases"
-                      PRLabels: "auto-merge"
                       CloseAfterOpenForTesting: '${{ parameters.TestPipeline }}'
 
         - deployment: PublishDocsMs

eng/pipelines/templates/stages/archetype-java-release.yml

@@ -359,7 +359,6 @@ stages:
                           PRBranchName: increment-package-version-${{ parameters.ServiceDirectory }}-$(Build.BuildId)
                           CommitMsg: "Increment package version after release of ${{ artifact.groupId }} ${{ artifact.name }}"
                           PRTitle: "Increment version for ${{ parameters.ServiceDirectory }} releases"
-                          PRLabels: "auto-merge"
                           CloseAfterOpenForTesting: '${{ parameters.TestPipeline }}'
 
   - ${{if ne(parameters.EnableIntegrationStage, false)}}: