Don't double-paginate GitHub responses

Oktokit::Client is always initialized with `auto_paginate: true`,
so no additional pagination work is necessary. In fact, paginating
from Hound caused lists with > 100 results to return duplicate
entries and perform redundant work.
Did you maybe add pagination to `pull_request**s**_comments`? Octokit master doesn't paginate comments on a single pull request.