Loaded term "Useless" in messages

[pbsds]

Great tool, I'd love to use it on a large scale. But some of the language in the report messages could have a chilling effect on contributions if used in CI:

• "Useless parentheses around body of let expression"
• "Useless parentheses around primitive expression"
• "Useless parentheses around value in binding"

More inviting language is already present in messages like

• "This pattern bind is redundant, use FOOBAR instead"

Please use "Redundant" instead. :)