console.warn considered harmfull

[superboss224]

https://github.com/web3/web3.js/blob/c924148e34600e61c4d1326a9d30fcec83fa9f97/packages/web3-eth-ens/src/lib/ResolverMethodHandler.js#L245

The harmfull console.warn here should be removed, the lib should not display an error message if we are already catching potential errors in our code

More information : https://www.slideshare.net/dd105/logging-consideredharmful