chore(insights): Remove empty Session Health tab from Backend Insights (#87237)

![SCR-20250317-njju](https://github.com/user-attachments/assets/bb0df33e-1007-48f4-8326-3542c364612b)

Author: ryan953

static/app/views/insights/pages/backend/settings.ts

@@ -10,7 +10,6 @@ export const MODULES = [
   ModuleName.HTTP,
   ModuleName.CACHE,
   ModuleName.QUEUE,
-  ModuleName.SESSIONS,
   ModuleName.CRONS,
   ModuleName.UPTIME,
 ];