Remove CPU mode in tensorflow example

Author: yushulx

examples/DeepLabv3/web_app_tfjs/index.html

@@ -44,7 +44,6 @@ <h3>Controls</h3>
                             style="width: 100%; padding: 8px; border-radius: 4px; border: 1px solid #ddd;">
                             <option value="webgpu">WebGPU (GPU - Fastest)</option>
                             <option value="webgl" selected>WebGL (GPU)</option>
-                            <option value="cpu">CPU</option>
                         </select>
                     </div>
                     <button id="webcam-btn" class="btn primary" disabled>Start Webcam</button>

examples/DeepLabv3/web_app_tfjs/script.js

@@ -34,6 +34,9 @@ const fpsEl = document.getElementById('fps-counter');
 // Initialization
 async function init(backend = 'webgl') {
     try {
+        // Enable production mode for performance
+        tf.enableProdMode();
+
         webcamBtn.disabled = true;
         updateStatus(`Initializing ${backend}...`, 'loading');