Fix: more v3 icons cleanup (#14017)

src-ui/src/index.html

@@ -8,7 +8,6 @@
   <meta name="color-scheme" content="dark light">
   <meta name="theme-color" content="#17541f" />
   <link rel="manifest" href="manifest.webmanifest">
-  <link rel="icon" type="image/x-icon" href="favicon.ico">
   <link rel="apple-touch-icon" href="apple-touch-icon.png">
 </head>
 <body>