Remove layout import section from Wagmi implementation

- Address GitHub comment from rohit-710 questioning necessity of layout import
- Remove src/routes/+layout.svelte example with import '/appkit'
- Keep core AppKit initialization code intact
- Focus implementation documentation on essential setup only

Co-Authored-By: rohit@reown.com <rrohitramesh710@gmail.com>

Author: devin-ai-integration[bot]

snippets/appkit/svelte/wagmi/about/implementation.mdx

@@ -51,14 +51,3 @@ export { appKit }
 <Note>
   The `browser` check ensures AppKit is only initialized in the browser environment, which is important for SvelteKit's SSR compatibility.
 </Note>
-
-Then import this configuration in your app layout to ensure AppKit is initialized:
-
-```svelte
-<!-- src/routes/+layout.svelte -->
-<script>
-  import '$lib/appkit';
-</script>
-
-<slot />
-```