feat(sveltekit): Remove withSentryViteConfig (#7789)

Remove the `withSentryViteConfig` wrapper in favour of `sentrySvelteKitPlugin` introduced in #7788.

Author: Lms24

packages/sveltekit/src/vite/index.ts

@@ -1,2 +1 @@
-export { withSentryViteConfig } from './withSentryViteConfig';
 export { sentrySvelteKitPlugin } from './sentrySvelteKitPlugin';