Updated schema for the menu_category property (#142)

source/behavior/blocks/format/minecraft.block.json

@@ -63,12 +63,6 @@
           "default": "misc",
           "additionalProperties": false,
           "required": ["category"],
-          "properties": {
-            "menu_category": {
-              "title": "",
-              "description": "",
-              "type": "object",
-              "additionalProperties": false,
           "properties": {
             "category": {
               "title": "Category",
@@ -76,13 +70,6 @@
               "type": "string",
               "enum": ["construction", "nature", "equipment", "items", "none"]
             },
-                "group": {
-                  "title": "Group",
-                  "description": "Specifies the language file key that maps to which expandable/collapsible group this block will be a part of within a category. If this field is omitted, or there is no group whose name matches the loc string, this block will be placed standalone in the given category.",
-                  "type": "string"
-                }
-              }
-            },
             "group": {
               "title": "Group",
               "$comment": "UNDOCUMENTED",