remove missing export test suite (#2284)

Author: ignatiusmb

packages/kit/src/core/config/test/fixtures/export-missing/src/app.html

@@ -71,21 +71,6 @@ test('load default config (esm)', async () => {
 	await testLoadDefaultConfig('default-esm');
 });
 
-test('errors on loading config without default export', async () => {
-	let errorMessage = null;
-	try {
-		const cwd = join(__dirname, 'fixtures', 'export-missing');
-		await load_config({ cwd });
-	} catch (e) {
-		errorMessage = e.message;
-	}
-
-	assert.equal(
-		errorMessage,
-		'Your config is missing default exports. Make sure to include "export default config;"'
-	);
-});
-
 test('errors on loading config with incorrect default export', async () => {
 	let errorMessage = null;
 	try {