ci: remove slack notification (backport cosmos#24784) (cosmos#24785)

Co-authored-by: julienrbrt <[email protected]>

Author: mergify[bot]

.github/workflows/sims.yml

@@ -80,58 +80,3 @@ jobs:
       - name: test-sim-multi-seed-short
         run: |
           make test-sim-multi-seed-short
-
-  sims-notify-success:
-    needs:
-      [
-        test-sim-multi-seed-short,
-        test-sim-after-import,
-        test-sim-import-export,
-        test-sim-deterministic,
-      ]
-    runs-on: depot-ubuntu-22.04-16
-    if: ${{ success() }}
-    steps:
-      - name: Check out repository
-        uses: actions/checkout@v4
-      - name: Get previous workflow status
-        uses: ./.github/actions/last-workflow-status
-        id: last_status
-        with:
-          github_token: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: Notify Slack on success
-        if: ${{ steps.last_status.outputs.last_status == 'failure' }}
-        uses: rtCamp/[email protected]
-        env:
-          SLACK_WEBHOOK: ${{ secrets.SLACK_WEBHOOK }}
-          SLACK_CHANNEL: sdk-sims
-          SLACK_USERNAME: Sim Tests
-          SLACK_ICON_EMOJI: ":white_check_mark:"
-          SLACK_COLOR: good
-          SLACK_MESSAGE: Sims are passing
-          SLACK_FOOTER: ""
-
-  sims-notify-failure:
-    permissions:
-      contents: none
-    needs:
-      [
-        test-sim-multi-seed-short,
-        test-sim-after-import,
-        test-sim-import-export,
-        test-sim-deterministic,
-      ]
-    runs-on: depot-ubuntu-22.04-16
-    if: ${{ failure() }}
-    steps:
-      - name: Notify Slack on failure
-        uses: rtCamp/[email protected]
-        env:
-          SLACK_WEBHOOK: ${{ secrets.SLACK_WEBHOOK }}
-          SLACK_CHANNEL: sdk-sims
-          SLACK_USERNAME: Sim Tests
-          SLACK_ICON_EMOJI: ":skull:"
-          SLACK_COLOR: danger
-          SLACK_MESSAGE: Sims are failing
-          SLACK_FOOTER: ""