chore: Remove unused ShowUntil (#43546)

apps/docs/content/guides/platform/upgrading.mdx

@@ -12,14 +12,6 @@ This guide refers to upgrading the Postgres version of your Supabase Project. Fo
 
 You can upgrade your project using in-place upgrades or by pausing and restoring your project.
 
-<ShowUntil date="2024-12-17">
-<Admonition type="tip">
-
-The Migrating and Upgrading guide has been divided into two sections. To migrate between Supabase projects, see [Migrating within Supabase](/docs/guides/platform/migrating-within-supabase).
-
-</Admonition>
-</ShowUntil>
-
 ## In-place upgrades
 
 <Admonition type="note">

apps/docs/features/ui/ShowUntil.tsx

@@ -7,6 +7,9 @@ export function ShowUntil({ children, date }: { children: ReactNode; date: strin
   if (isNaN(untilDate.getTime()) || currentDate < untilDate) {
     return <>{children}</>
   } else {
+    console.error(
+      `[docs/features/ui/ShowUntil]: Component for ${date} expired, please update remove this note.`
+    )
     return null
   }
 }