Remove Elementor theme from blueprint (#1508)

## Motivation for the change, related issues

We added this theme during testing and it doesn't work great in the
puzzle app so we are removing it.

## Implementation details

## Testing Instructions (or ideally a Blueprint)

Author: bgrgicak

packages/playground/puzzle/src/site-builder/blueprints/elementor.json

@@ -1,16 +1,6 @@
 {
 	"landingPage": "/wp-admin/",
 	"steps": [
-		{
-			"step": "installTheme",
-			"themeZipFile": {
-				"resource": "wordpress.org/themes",
-				"slug": "hello-elementor"
-			},
-			"options": {
-				"activate": true
-			}
-		},
 		{
 			"step": "installPlugin",
 			"pluginZipFile": {