Merge pull request #2343 from hperrin/patch-1

Remove unused r variable in bind-this tutorial.

site/content/tutorial/06-bindings/11-bind-this/app-a/App.svelte

@@ -2,10 +2,6 @@
 	import { onMount } from 'svelte';
 
 	let canvas;
-	let ctx;
-	let running = false;
-
-	const r = Math.random();
 
 	onMount(() => {
 		const ctx = canvas.getContext('2d');

site/content/tutorial/06-bindings/11-bind-this/app-b/App.svelte

@@ -2,10 +2,6 @@
 	import { onMount } from 'svelte';
 
 	let canvas;
-	let ctx;
-	let running = false;
-
-	const r = Math.random();
 
 	onMount(() => {
 		const ctx = canvas.getContext('2d');