Remove obsolete keys through lint script (once more)

assets/layers/public_bookcase/public_bookcase.json

@@ -20,7 +20,6 @@
     "osmTags": "amenity=public_bookcase"
   },
   "minzoom": 10,
-  "wayHandling": 2,
   "title": {
     "render": {
       "en": "Bookcase",
@@ -44,23 +43,6 @@
       }
     ]
   },
-  "icon": {
-    "render": "./assets/themes/bookcases/bookcase.svg"
-  },
-  "label": {
-    "mappings": [
-      {
-        "if": "name~*",
-        "then": "<div style='background: white; padding: 0.25em; border-radius:0.5em'>{name}</div>"
-      }
-    ]
-  },
-  "color": {
-    "render": "#0000ff"
-  },
-  "width": {
-    "render": "8"
-  },
   "presets": [
     {
       "title": {