remove comment about adapter-auto

...once a specific sveltekit adapter is chosen

Fixes sveltejs#430

packages/addons/_tests/sveltekit-adapter/test.ts

@@ -1,6 +1,8 @@
 import { expect } from '@playwright/test';
-import { setupTest } from '../_setup/suite.ts';
+import { readFile } from 'node:fs/promises';
+import { join } from 'node:path';
 import sveltekitAdapter from '../../sveltekit-adapter/index.ts';
+import { setupTest } from '../_setup/suite.ts';
 
 const addonId = sveltekitAdapter.id;
 const { test, variants, prepareServer } = setupTest({ [addonId]: sveltekitAdapter });
@@ -13,5 +15,5 @@ test.concurrent.for(kitOnly)('core - %s', async (variant, { page, ...ctx }) => {
 	// kill server process when we're done
 	ctx.onTestFinished(async () => await close());
 
-	expect(true).toBe(true);
+	expect(await readFile(join(cwd, 'svelte.config.js'), 'utf8')).not.toMatch('adapter-auto');
 });

packages/addons/sveltekit-adapter/index.ts

@@ -82,6 +82,14 @@ export default defineAddon({
 			) as AstTypes.ObjectProperty | undefined;
 
 			if (kitConfig && kitConfig.value.type === 'ObjectExpression') {
+				const adapterProp = kitConfig.value.properties.find(
+					(p) =>
+						p.type === 'ObjectProperty' && p.key.type === 'Identifier' && p.key.name === 'adapter'
+				);
+				if (adapterProp) {
+					adapterProp.comments = [];
+				}
+
 				// only overrides the `adapter` property so we can reset it's args
 				object.overrideProperties(kitConfig.value, {
 					adapter: functions.callByIdentifier(adapterName, [])