Themes(food): make minzoom uniform for food and ice_cream in theme

assets/svg/license_info.json

@@ -69,14 +69,6 @@
     ],
     "sources": []
   },
-  {
-    "path": "blocked.svg",
-    "license": "CC0-1.0",
-    "authors": [
-      "Pieter Vander Vennet"
-    ],
-    "sources": []
-  },
   {
     "path": "brick_wall_raw.svg",
     "license": "CC0-1.0",

assets/themes/food/food.json

@@ -40,8 +40,12 @@
   },
   "icon": "./assets/layers/food/restaurant.svg",
   "layers": [
-    "food",
-    "ice_cream",
+    {
+      "builtin": ["food","ice_cream"],
+      "override": {
+        "minzoom": 11
+      }
+    },
     "outdoor_seating",
     "food_courts"
   ],