Remove High Performance section per feedback

Co-authored-by: udzura <91011+udzura@users.noreply.github.com>

Author: Copilot

index.html

@@ -315,11 +315,6 @@ <h3>mruby Compatible</h3>
                     <h3>Rust Safety</h3>
                     <p>Built with Rust for memory safety and reliability. Eliminate entire classes of bugs and security vulnerabilities.</p>
                 </div>
-                <div class="feature">
-                    <div class="feature-icon">🚀</div>
-                    <h3>High Performance</h3>
-                    <p>Efficient execution engine designed for speed. Zero-cost abstractions and optimized bytecode interpretation.</p>
-                </div>
             </section>
 
             <section class="code-section">