Cleanup pointcache and model families

[MustafaJafar]

Is there an existing issue for this?

• [x] I have searched the existing issues and added correct labels.

Please describe the feature you have in mind and explain what the current shortcomings are?

• Clean up the pointcache and model families.
• use get_publish_families
• remove collect_instances_type.py collector plugin

Suggested implementation?

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Describe alternatives you've considered:

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