Remove duff line

varia/package.json

@@ -43,7 +43,6 @@
     "build": "run-p \"build:*\"",
     "watch": "chokidar \"**/*.scss\" -c \"npm run build\" --initial",
     "child-theme": "sh ../theme-dev-utils/build-child-theme.sh",
-    "postinstall": "cd ../alves && npm install",
     "children": "sh ./rebuild-child-themes.sh"
   }
 }