chore: remove unused workflow (#128)

Author: Timeless0911

.github/workflows/monitor-metrics.yaml

@@ -47,47 +47,3 @@ jobs:
             echo "Some benchmark metrics exceed the threshold, please visit the previous step for more information"
             exit 1
           fi
-      - name: Create Issue on Failure
-        if: failure()
-        uses: actions/github-script@v7
-        with:
-          github-token: ${{ secrets.RSPACK_BOT_ACCESS_TOKEN }}
-          script: |
-            const diffResult = `${{ steps.monitor.outputs.diff-result }}`
-            let result = "task ${{ steps.monitor.outputs.result }}"
-            if (diffResult) {
-              result = diffResult.replace(/@@/g, "\n");
-            }
-            const url = `${context.serverUrl}//${context.repo.owner}/${context.repo.repo}/actions/runs/${context.runId}`
-            const urlLink = `[Open](${url})`
-            const date = new Date();
-            const year = date.getFullYear();
-            const month = ('0' + (date.getMonth() + 1)).slice(-2);
-            const day = ('0' + date.getDate()).slice(-2);
-            const today = `${year}-${month}-${day}`
-
-            const issueTitle = `Benchmark Performance Degradation (${today})`
-            const issueBody = `
-            📝 Benchmark detail: ${urlLink}
-
-            ${result}
-            `
-
-            let repo = context.repo.repo
-            const product = "${{ matrix.product }}"
-            if (product === "MODERNJS_FRAMEWORK") {
-              repo = "modern.js"
-            } else if (product === "RSBUILD") {
-              repo = "rsbuild"
-            } else if (product === "RSPRESS") {
-              repo = "rspress"
-            } else if (product === "RSLIB") {
-              repo = "rslib"
-            }
-
-            await github.rest.issues.create({
-              owner: context.repo.owner,
-              repo: repo,
-              title: issueTitle,
-              body: issueBody,
-            });