Ensure rake check:style lints the same files as standard RuboCop runs

[larouxn]

Proposing we removed task.patterns from the rake style task so that it behaves and lints the exact same as standard bundle exec rubocop runs.

References and prior PRs

• https://docs.rubocop.org/rubocop/latest/usage/cli_reference.html
• Regenerate RuboCop todo #2234
• Fix various RuboCop todo offences #2231
• Modernize RuboCop usage, enable performance cops, add minitest and rake cops #2205

[jneen]

Would leaving off task.patterns entirely work here?

[larouxn]

Yep and in that case the exact number of files checked becomes the same too.

[jneen]

Sweet, let's do that then. Ideally rake check:style and rubocop are identical, I don't think there's any reason for them to be different.