When deleting parent content type, throws error.

Problem/Motivation

When deleting the parent content type. When trying to delete the entity, it throws an error.

Steps to reproduce

1. Enable the module.
2. Set it up for a content type and taxonomy
3. Create a new content item and verify the taxonomy term got created
4. Delete the new content item

Proposed resolution

Use non-deprecated functions

Remaining tasks

none

User interface changes

none

API changes

none

Data model changes

none