tools: remove excessive comments from .eslintrc

The comments make the config hard to scan. They do not provide any
information that isn't in the documentation links referred to in
comments (that are not being removed here).

Additionally, all rule config sections are alphabetically ordered for
easier scanning etc.

PR-URL: https://github.com/nodejs/node/pull/5151


Reviewed-By: Roman Reiss <me@silverwind.io>