chore(sfc-playground): remove unused font

packages/sfc-playground/index.html

@@ -6,13 +6,6 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <link rel="icon" type="image/svg" href="/logo.svg" />
     <title>Vue SFC Playground</title>
-
-    <link rel="preconnect" href="https://fonts.gstatic.com" />
-    <link
-      href="https://fonts.googleapis.com/css2?family=Source+Code+Pro&display=swap"
-      rel="stylesheet"
-    />
-
     <script>
       // process shim for old versions of @vue/compiler-sfc dependency
       window.process = { env: {} }