[examples] Make -functions example the default (#3541)

* Remove now-examples references

* Adjust gatsby example

* Adjust svelte example

* Adjust vanilla example

examples/svelte/rollup.config.js

@@ -30,11 +30,7 @@ export default {
     // some cases you'll need additional configuration —
     // consult the documentation for details:
     // https://github.com/rollup/rollup-plugin-commonjs
-    resolve({
-      browser: true,
-      dedupe: importee =>
-        importee === 'svelte' || importee.startsWith('svelte/'),
-    }),
+    resolve({ browser: true }),
     commonjs(),
 
     // Watch the `public` directory and refresh the