Remove private from package.json

libraries/o-error/package.json

@@ -8,7 +8,6 @@
   },
   "author": "Overleaf (https://www.overleaf.com)",
   "license": "MIT",
-  "private": true,
   "repository": "github:overleaf/o-error",
   "devDependencies": {
     "chai": "^3.3.0",