Remove issue-labeled.yml GitHub workflow (#95611)

This was previously used for the Alerting squad
but isn't anymore.

.github/CODEOWNERS

@@ -700,7 +700,6 @@ embed.go @grafana/grafana-as-code
 /.github/pr-checks.json @tolzhabayev
 /.github/pr-commands.json @tolzhabayev
 /.github/renovate.json5 @grafana/frontend-ops
-/.github/teams.yml @armandgrillet
 /.github/workflows/alerting-swagger-gen.yml @grafana/alerting-backend
 /.github/workflows/auto-milestone.yml @grafana/grafana-developer-enablement-squad
 /.github/workflows/backport.yml @grafana/grafana-developer-enablement-squad
@@ -717,7 +716,6 @@ embed.go @grafana/grafana-as-code
 /.github/workflows/deploy-pr-preview.yml @grafana/docs-tooling
 /.github/workflows/epic-add-to-platform-ux-parent-project.yml @meanmina
 /.github/workflows/github-release.yml @grafana/grafana-developer-enablement-squad
-/.github/workflows/issue-labeled.yml @armandgrillet
 /.github/workflows/issue-opened.yml @grafana/grafana-community-support
 /.github/workflows/metrics-collector.yml @torkelo
 /.github/workflows/milestone.yml @tolzhabayev