Revert "Add missing admin action files and navigation links"

This reverts commit 41be6835bf.

src/actions/admin-radio.ts

@@ -1 +1,27 @@
-"use server";
+'use server';
+
+import { revalidatePath } from 'next/cache';
+import { prisma } from '@/lib/prisma';
+import { requireStaff } from '@/lib/admin/guard';
+
+export async function deleteShout(formData: FormData): Promise<void> {
+  await requireStaff();
+
+  const raw = formData.get('id');
+  if (typeof raw !== 'string' || raw.trim() === '') return;
+
+  let id: bigint;
+  try {
+    id = BigInt(raw);
+  } catch {
+    return;
+  }
+
+  try {
+    await prisma.radioShouts.delete({ where: { id } });
+  } catch {
+    // Row may already be gone; ignore so the action does not throw.
+  }
+
+  revalidatePath('/admin/radio');
+}