Revert "Add missing admin action files and navigation links"

This reverts commit 41be6835bf.

src/actions/radio-apply.ts

@@ -11,9 +11,7 @@ const TEXT_MAX = 5000;
 const STYLE_MAX = 5000;
 
 function str(form: FormData, key: string, max: number): string {
-  return String(form.get(key) ?? "")
-    .trim()
-    .slice(0, max);
+  return String(form.get(key) ?? "").trim().slice(0, max);
 }
 
 /**