Resolved The app icon set AppIcon has an unassigned child warning… (#348)

Co-authored-by: w-goog <115107835+w-goog@users.noreply.github.com>

Author: cho407

Samples/Swift/DaysUntilBirthday/Shared/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -154,14 +154,10 @@
       "size" : "512x512"
     },
     {
+      "filename" : "mac-icon.png",
       "idiom" : "mac",
       "scale" : "2x",
       "size" : "512x512"
-    },
-    {
-      "filename" : "mac-icon.png",
-      "idiom" : "mac",
-      "size" : "1024x1024"
     }
   ],
   "info" : {