Stop sending hangs to slack for a bit (#11933)

Release Notes:

- N/A

crates/collab/src/api/events.rs

@@ -281,48 +281,6 @@ pub async fn post_hang(
         backtrace = %backtrace,
         "hang report");
 
-    if let Some(slack_panics_webhook) = app.config.slack_panics_webhook.clone() {
-        let payload = slack::WebhookBody::new(|w| {
-            w.add_section(|s| s.text(slack::Text::markdown("Possible Hang".to_string())))
-                .add_section(|s| {
-                    s.add_field(slack::Text::markdown(format!(
-                        "*Version:*\n {} ",
-                        report.app_version.unwrap_or_default()
-                    )))
-                    .add_field({
-                        let hostname = app.config.blob_store_url.clone().unwrap_or_default();
-                        let hostname = hostname.strip_prefix("https://").unwrap_or_else(|| {
-                            hostname.strip_prefix("http://").unwrap_or_default()
-                        });
-
-                        slack::Text::markdown(format!(
-                            "*Incident:*\n<https://{}.{}/{}.hang.json|{}…>",
-                            CRASH_REPORTS_BUCKET,
-                            hostname,
-                            incident_id,
-                            incident_id.chars().take(8).collect::<String>(),
-                        ))
-                    })
-                })
-                .add_rich_text(|r| r.add_preformatted(|p| p.add_text(backtrace)))
-        });
-        let payload_json = serde_json::to_string(&payload).map_err(|err| {
-            log::error!("Failed to serialize payload to JSON: {err}");
-            Error::Internal(anyhow!(err))
-        })?;
-
-        reqwest::Client::new()
-            .post(slack_panics_webhook)
-            .header("Content-Type", "application/json")
-            .body(payload_json)
-            .send()
-            .await
-            .map_err(|err| {
-                log::error!("Failed to send payload to Slack: {err}");
-                Error::Internal(anyhow!(err))
-            })?;
-    }
-
     Ok(())
 }