Remove the deprecated "Format Alert" button from the Slack renderer (#5141)

# What this PR does

Removes the deprecated "Format Alert" button from the Slack renderer

## Which issue(s) this PR closes

Related to [issue link here]

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## Checklist

- [ ] Unit, integration, and e2e (if applicable) tests updated
- [ ] Documentation added (or `pr:no public docs` PR label added if not
required)
- [ ] Added the relevant release notes label (see labels prefixed w/
`release:`). These labels dictate how your PR will
    show up in the autogenerated release notes.

engine/apps/alerts/incident_appearance/renderers/slack_renderer.py

@@ -202,9 +202,6 @@ class AlertGroupSlackRenderer(AlertGroupBaseRenderer):
         unsilence_button = _make_button("Unsilence", "UnSilenceGroupStep")
         responders_button = _make_button("Responders", "StartManageResponders", "manage_responders")
         attach_button = _make_button("Attach to ...", "SelectAttachGroupStep")
-        format_alert_button = _make_button(
-            ":mag: Format Alert", "OpenAlertAppearanceDialogStep", "alertgroup_appearance"
-        )
 
         resolution_notes_count = alert_group.resolution_notes.count()
         resolution_notes_button = {
@@ -275,9 +272,6 @@ class AlertGroupSlackRenderer(AlertGroupBaseRenderer):
             else:
                 buttons.append(unresolve_button)
 
-            if integration.is_available_for_custom_templates:
-                buttons.append(format_alert_button)
-
             buttons.append(resolution_notes_button)
 
             if grafana_incident_enabled and not alert_group.acknowledged:

engine/apps/slack/tests/test_slack_renderer.py

@@ -235,30 +235,6 @@ def test_slack_renderer_unattach_button(make_organization, make_alert_receive_ch
     )
 
 
-@pytest.mark.django_db
-def test_slack_renderer_format_alert_button(
-    make_organization, make_alert_receive_channel, make_alert_group, make_alert
-):
-    organization = make_organization()
-    alert_receive_channel = make_alert_receive_channel(organization)
-    alert_group = make_alert_group(alert_receive_channel)
-    make_alert(alert_group=alert_group, raw_request_data={})
-
-    elements = AlertGroupSlackRenderer(alert_group).render_alert_group_attachments()[0]["blocks"][0]["elements"]
-
-    button = elements[5]
-    assert button["text"]["text"] == ":mag: Format Alert"
-    assert json.loads(button["value"]) == json.loads(
-        make_value(
-            {
-                "organization_id": organization.pk,
-                "alert_group_ppk": alert_group.public_primary_key,
-            },
-            organization,
-        )
-    )
-
-
 @pytest.mark.django_db
 def test_slack_renderer_resolution_notes_button(
     make_organization, make_alert_receive_channel, make_alert_group, make_alert
@@ -270,7 +246,7 @@ def test_slack_renderer_resolution_notes_button(
 
     elements = AlertGroupSlackRenderer(alert_group).render_alert_group_attachments()[0]["blocks"][0]["elements"]
 
-    button = elements[6]
+    button = elements[5]
     assert button["text"]["text"] == "Add Resolution notes"
     assert json.loads(button["value"]) == json.loads(
         make_value(

engine/apps/slack/views.py

@@ -128,8 +128,6 @@ class SlackEventApiEndpointView(APIView):
         if isinstance(payload, str):
             payload = json.JSONDecoder().decode(payload)
 
-        logger.info(f"Slack payload is {payload}")
-
         # Checking if it's repeated Slack request
         if "HTTP_X_SLACK_RETRY_NUM" in request.META and int(request.META["HTTP_X_SLACK_RETRY_NUM"]) > 1:
             logger.critical(