.amd.json: Formatting, remove compat.

local.amd.json

@@ -1,13 +1,5 @@
 {
   "paths": {
     "amber/web": "src"
-  },
-  "map": {
-    "*": {
-      "00comment": "These are backward compatibility pointers.",
-      "amber-contrib-web/Web": "amber/web/Web",
-      "amber_core/Web": "amber/web/Web",
-      "amber_core/Canvas": "amber/web/Web"
-    }
   }
 }