remove test - invalid identifiers will no longer work

test/runtime/samples/component-binding-invalid-identifier/Counter.html

@@ -1,11 +0,0 @@
-<script>
-	export let undefined = 0;
-
-	function state() {
-		// [svelte-upgrade warning]
-		// this function needs to be manually rewritten
-		return arg;
-	}
-</script>
-
-<button on:click='{() => undefined += 1}'>+1</button>

test/runtime/samples/component-binding-invalid-identifier/_config.js

@@ -1,29 +0,0 @@
-export default {
-	'skip-ssr': true, // TODO delete this line, once binding works
-
-	html: `
-		<button>+1</button>
-		<p>count: 0</p>
-	`,
-
-	test ( assert, component, target, window ) {
-		const click = new window.MouseEvent( 'click' );
-		const button = target.querySelector( 'button' );
-
-		button.dispatchEvent( click );
-
-		assert.equal( component.x, 1 );
-		assert.htmlEqual( target.innerHTML, `
-			<button>+1</button>
-			<p>count: 1</p>
-		` );
-
-		button.dispatchEvent( click );
-
-		assert.equal( component.x, 2 );
-		assert.htmlEqual( target.innerHTML, `
-			<button>+1</button>
-			<p>count: 2</p>
-		` );
-	}
-};

test/runtime/samples/component-binding-invalid-identifier/main.html

@@ -1,8 +0,0 @@
-<script>
-	import Counter from './Counter.html';
-
-	export let x;
-</script>
-
-<Counter bind:x-count='x'/>
-<p>count: {x}</p>