chore(cleanup): remove constants/constants.go

[rinor]

will get back to those strings and errors, but right now just cleaning stuff up.

[eyberg]

so this is really a colors vs. no colors thing - I think that really should be a choice belonging to the end-user except for when the output is clearly being ingested via another program - I think it'd make the most sense to have a global/config level flag that users can turn on/off as desired