Revert "Add missing admin action files and navigation links"

This reverts commit 41be6835bf.

src/app/admin/email-templates/page.tsx

@@ -32,15 +32,13 @@ export default async function AdminEmailTemplates() {
         </div>
       </div>
 
-      <form action={createEmailTemplate} className="admin-card mb-6">
+      <form
+        action={createEmailTemplate}
+        className="admin-card mb-6"
+      >
         <h3 className="text-sm font-bold text-[var(--color-text)] mb-2">{t("newTemplate")}</h3>
         <div className="flex gap-2 flex-wrap items-center mb-3">
-          <input
-            name="name"
-            placeholder={t("form.namePlaceholder")}
-            required
-            className="flex-1 min-w-[180px]"
-          />
+          <input name="name" placeholder={t("form.namePlaceholder")} required className="flex-1 min-w-[180px]" />
           <input
             name="subject"
             placeholder={t("form.subjectPlaceholder")}
@@ -110,9 +108,7 @@ export default async function AdminEmailTemplates() {
                   </button>
                   {template.updatedAt ? (
                     <span className="text-xs text-gray-500 dark:text-gray-400">
-                      {t("updated", {
-                        date: new Date(template.updatedAt).toISOString().slice(0, 16).replace("T", " "),
-                      })}
+                      {t("updated", { date: new Date(template.updatedAt).toISOString().slice(0, 16).replace("T", " ") })}
                     </span>
                   ) : null}
                 </div>