Remove message about node version choice

[lholmquist]

Currently if the --nodeVersion flag is used with a version that is not in our hard-coded list https://github.com/bucharest-gold/nodeshift/blob/master/bin/nodeshift#L29,
then we emit a warning.

We started talking about have more point releases as well as cr releases, i'm tempted to take this check out

@lance @helio-frota any thoughts

[lance]

Easy thing is to remove the check. More fancy and of questionable benefit is to simply check major version number through a regex.

[helio-frota]

@lholmquist I agree with @lance

[lholmquist]

probably just going to remove the check

[lance]

@lholmquist Makes sense - we just need to have a user-friendly failure mode when the node version specified is not available

[lholmquist]

hmmmm. i'll have to think about that one. the error will happen during the build on openshift, so i might need to parse the error message that is returned. i'll play with it