Disable bin/checkDevOnly for now
Disable bin/checkDevOnly for now

Due to https://github.com/scala-js/scala-js/issues/2896

Tests pass, dev/prod mode manually confirmed.
No functional impact so fine to disable for now.

matthughes/scalajs-react,japgolly/scalajs-react,japgolly/scalajs-react,japgolly/scalajs-react,matthughes/scalajs-react,matthughes/scalajs-react,japgolly/scalajs-react