Move or Delete Drupal 7 Commerce Documentation in Site Buiding Guide

Describe your bug or feature request.

We're working to move all the Drupal 7 documentation out of the Site Building Guide: https://www.drupal.org/documentation/build →

Commerce has a couple of pages of Drupal 7 documentation that needs moved or deleted:
https://www.drupal.org/node/2323043 →
https://www.drupal.org/node/2444403 →
https://www.drupal.org/node/2338321 →
https://www.drupal.org/node/2323049 →
https://www.drupal.org/node/2689887 →

These pages should be moved to the new Drupal 7 wiki:
https://www.drupal.org/docs/7 →