Remove the Admin Dashboard button from the auction screen

Removes the conditional rendering of the "Admin Dashboard" button in the Auctions page component when the user is authenticated and their role is 'admin' or 'superadmin'.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 069d4324-6c40-4355-955e-c714a50de1ea
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/3df548ff-50ae-432f-9be4-25d34eccc983/069d4324-6c40-4355-955e-c714a50de1ea/9tQ591o

client/src/pages/Auctions.tsx

@@ -186,23 +186,13 @@ export default function Auctions() {
               </Link>
               
               {isAuthenticated && user ? (
-                <>
-                  {(user.role === 'admin' || user.role === 'superadmin') && (
-                    <Link href="/admin">
-                      <Button variant="ghost" size="sm">
-                        Admin Dashboard
-                      </Button>
-                    </Link>
-                  )}
-                  
-                  <Button 
-                    variant="ghost" 
-                    size="sm"
-                    onClick={() => window.location.href = "/api/logout"}
-                  >
-                    Logout
-                  </Button>
-                </>
+                <Button 
+                  variant="ghost" 
+                  size="sm"
+                  onClick={() => window.location.href = "/api/logout"}
+                >
+                  Logout
+                </Button>
               ) : (
                 <Button size="sm" onClick={() => window.location.href = "/api/login"}>
                   Login