remove version/mc version from sub src

src/double_shulker_shells/data/minecraft/advancement/double_shulker_shells.json

@@ -0,0 +1,22 @@
+{
+  "display": {
+    "icon": {
+      "id": "minecraft:shulker_shell"
+    },
+    "title": "Double Shulker Shells",
+    "description": "All shulkers drop 2 shells.",
+    "show_toast": false,
+    "announce_to_chat": false
+  },
+  "parent": "minecraft:root",
+  "criteria": {
+    "tick": {
+      "trigger": "minecraft:tick"
+    }
+  },
+  "requirements": [
+    [
+      "tick"
+    ]
+  ]
+}

src/double_shulker_shells/data/minecraft/loot_table/entities/shulker.json

@@ -0,0 +1,16 @@
+{
+  "type": "minecraft:entity",
+  "pools": [
+    {
+      "rolls": 2,
+      "bonus_rolls": 0,
+      "entries": [
+        {
+          "type": "minecraft:item",
+          "name": "minecraft:shulker_shell"
+        }
+      ]
+    }
+  ],
+  "random_sequence": "minecraft:entities/shulker"
+}

src/double_shulker_shells/pack.mcmeta

@@ -0,0 +1,7 @@
+{
+	"pack": {
+		"pack_format": 48,
+		"supported_formats": {"min_inclusive": 48, "max_inclusive": 48},
+		"description": [{"text":"Double Shulker Shells","color":"gold"}]
+	}
+}