Revert "Add missing admin action files and navigation links"

This reverts commit 41be6835bf.

src/app/admin/tickets/templates/page.tsx

@@ -1,25 +0,0 @@
-import { redirect } from 'next/navigation'
-import { canAccess, getAdminContext, PERMS } from '@/lib/permissions'
-import { prisma } from '@/lib/prisma'
-import { TicketTemplatesManager } from './templates-manager'
-
-export default async function TicketTemplatesPage() {
-  const { session, permissions } = await getAdminContext()
-  if (!canAccess(permissions, PERMS.TICKETS_EDIT, session.user.rank)) {
-    redirect('/admin/tickets')
-  }
-
-  const templates = await prisma.websiteTicketTemplate.findMany({
-    orderBy: { sortOrder: 'asc' },
-  })
-
-  return (
-    <div className="space-y-6">
-      <div>
-        <h1 className="text-3xl font-bold tracking-tight">Reply Templates</h1>
-        <p className="text-muted-foreground">Pre-defined responses for common ticket situations</p>
-      </div>
-      <TicketTemplatesManager templates={templates} />
-    </div>
-  )
-}