replace google material icons with phosphor icons

src/app.html

@@ -13,12 +13,6 @@
 			rel="stylesheet"
 		/>
 
-		<!-- Material Design Icons -->
-		<link
-			href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined"
-			rel="stylesheet"
-		/>
-
 		%sveltekit.head%
 	</head>
 	<body data-sveltekit-preload-data="hover">