Remove a block from Themes page

Remove a specific block element from the Themes page.

src/pages/Themes.tsx

@@ -76,18 +76,6 @@ const Themes = () => {
             ))}
           </div>
 
-          <div className="mt-16 text-center">
-            <div className="bg-surface border border-outline rounded-lg p-8 max-w-4xl mx-auto">
-              <h3 className="text-xl font-semibold text-foreground mb-4">
-                More Themes Coming Soon
-              </h3>
-              <p className="text-muted-foreground">
-                We're continuously developing new interactive themes to cover more educational topics. 
-                Each theme will include multiple interactive modules, assessments, and practical exercises 
-                to enhance your learning experience.
-              </p>
-            </div>
-          </div>
         </div>
       </div>
     </div>