Remove CI failure notification
diff --git a/.github/workflows/dart.yml b/.github/workflows/dart.yml
index ad93ba7..4e4d8e3 100644
--- a/.github/workflows/dart.yml
+++ b/.github/workflows/dart.yml
@@ -396,26 +396,3 @@
       - job_003
       - job_004
       - job_005
-  job_012:
-    name: Notify failure
-    runs-on: ubuntu-latest
-    if: "(github.event_name == 'push' || github.event_name == 'schedule') && failure()"
-    steps:
-      - run: |
-          curl -H "Content-Type: application/json" -X POST -d \
-            "{'text':'Build failed! ${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY}/actions/runs/${GITHUB_RUN_ID}'}" \
-            "${CHAT_WEBHOOK_URL}"
-        env:
-          CHAT_WEBHOOK_URL: "${{ secrets.BUILD_AND_TEST_TEAM_CHAT_WEBHOOK_URL }}"
-    needs:
-      - job_001
-      - job_002
-      - job_003
-      - job_004
-      - job_005
-      - job_006
-      - job_007
-      - job_008
-      - job_009
-      - job_010
-      - job_011
diff --git a/mono_repo.yaml b/mono_repo.yaml
index 344e41c..882e24c 100644
--- a/mono_repo.yaml
+++ b/mono_repo.yaml
@@ -8,18 +8,6 @@
     pull_request:
   env:
     DISPLAY: ':99'
-  on_completion:
-    - name: "Notify failure"
-      runs-on: ubuntu-latest
-      # Run only if other jobs have failed and this is a push or scheduled build.
-      if: (github.event_name == 'push' || github.event_name == 'schedule') && failure()
-      steps:
-        - run: >
-            curl -H "Content-Type: application/json" -X POST -d \
-              "{'text':'Build failed! ${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY}/actions/runs/${GITHUB_RUN_ID}'}" \
-              "${CHAT_WEBHOOK_URL}"
-          env:
-            CHAT_WEBHOOK_URL: ${{ secrets.BUILD_AND_TEST_TEAM_CHAT_WEBHOOK_URL }}
 
 merge_stages:
 - analyzer_and_format