Fix minecraft-data as proper submodule

data/minecraft-data/schemas/blockMappings_schema.json

@@ -1,34 +0,0 @@
-{
-  "$schema": "http://json-schema.org/draft-07/schema#",
-  "title": "blockMappings",
-  "description": "Maps block names and states between PC and PE (Bedrock) versions.",
-  "type": "array",
-  "items": {
-    "type": "object",
-    "description": "A mapping between a PC and PE block.",
-    "properties": {
-      "pc": { "$ref": "#/$defs/blockRef", "description": "PC (Java Edition) block reference." },
-      "pe": { "$ref": "#/$defs/blockRef", "description": "PE (Bedrock Edition) block reference." }
-    },
-    "required": ["pc", "pe"],
-    "additionalProperties": false
-  },
-  "$defs": {
-    "blockRef": {
-      "type": "object",
-      "description": "A reference to a block, including its name and states.",
-      "properties": {
-        "name": {
-          "type": "string",
-          "description": "The block's unique name identifier."
-        },
-        "states": {
-          "type": "object",
-          "description": "The block's state properties as key-value pairs."
-        }
-      },
-      "required": ["name", "states"],
-      "additionalProperties": false
-    }
-  }
-}