Revert "[ZD#330711] Monkey patch for app not picking up the partnerName ...

This reverts monkey patch for app not picking up the partnerName of a sharing agreement as the real fix has been deployed to the framework.

JIRA: https://zendesk.atlassian.net/browse/APPS-420

ZAM Fix: https://github.com/zendesk/zendesk_app_market/pull/262

/cc @jwswj @jakeisonline