Room schema: Remove default "null" from node locks array

Null is not a valid default value for an array, is it?

Author: ampleyfly

schema/m3-room.schema.json

@@ -1878,7 +1878,6 @@
             "type": "array",
             "title": "Node Locks",
             "description": "An array of corresponding lock and unlock conditions for this node",
-            "default": null,
             "items": {
               "type": "object",
               "title": "Lock Object",