Remove spacing rule between method name and the first argument

When omitting parenthesis, Rubocop wants one space between the method name & the first argument. While this will most often be the case anyway, there are instances such as https://github.com/TheClymb/theclymb/pull/4038#discussion-diff-21629810 where aligning the arguments can be pleasing to the eye.

This is to suggest removing this spacing rule. Thots!??