Remove peerDependency coffeelint

This is bound to cause trouble. Plus, it is unnecessary.

Other rules like [variable-scope](https://github.com/fragphace/coffeelint-variable-scope/blob/master/package.json) and [use-strict](https://github.com/janraasch/coffeelint-use-strict/blob/master/package.json) do not rely on this either.