Remove handling of the following Candlepin events:
entitlement.created and entitlement.deleted - these are related to attaching subscriptions to hosts. So none of those in SCA mode.
compliance.created - Used to update the host's subscription status, which looks at subscription attachments. Irrelevant with SCA-only.
system_purpose_compliance.created - Used to update the host's system purpose status, which tells you if the host's syspurpose attributes are matched by an attached subscription. Irrelevant with SCA-only.
owner_content_access_mode.modified - This event is received whenever SCA is toggled. Irrelevant with SCA-only, but I could see continuing to handle it just to guard against users trying to get around SCA-only
Event handling in Katello's code was previously altered so these events are a no-op. Now, when removing event handling entirely, we need to make sure to do the above in puppet-candlepin.
Katello doesn't have a Candlepin event processor for when subscriptions are removed from an AK, so the CANDLEPIN-832 changes will leave Pools associated with some old AKs.
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