gui: Remove superfluous translate in previous (ref #7102)

gui/default/index.html

@@ -48,7 +48,7 @@
                 <div class="panel-icon">
                   <span class="fas fa-exclamation-circle"></span>
                 </div>
-                <span translate>Warning!</span>
+                Warning!
               </h3>
             </div>
             <div class="panel-body">