fix: avoid duplicate icon.icns copy in mac build

Author: legeling

electron-builder.json

@@ -14,10 +14,6 @@
       "from": "resources/icon.ico",
       "to": "icon.ico"
     },
-    {
-      "from": "resources/icon.icns",
-      "to": "icon.icns"
-    },
     {
       "from": "resources/icon.iconset",
       "to": "icon.iconset"