Remove deprecation note from shorthand steps (#1507)

Fixes 

- #1282


## Implementation details
remove the deprecation lines from the schema

packages/playground/blueprints/public/blueprint-schema.json

@@ -95,8 +95,7 @@
 							}
 						]
 					},
-					"description": "WordPress plugins to install and activate",
-					"deprecated": "This experimental option will change without warning.\nUse `steps` instead."
+					"description": "WordPress plugins to install and activate"
 				},
 				"siteOptions": {
 					"type": "object",
@@ -109,8 +108,7 @@
 							"description": "The site title"
 						}
 					},
-					"description": "WordPress site options to define",
-					"deprecated": "This experimental option will change without warning.\nUse `steps` instead."
+					"description": "WordPress site options to define"
 				},
 				"login": {
 					"anyOf": [