Remove `custom` scan action from Scan execution policy schema
Why are we doing this work
In #472193 (closed) we cleaned up the code for the ended experiment, but we kept the schema so that we don't invalidate all policies. In %18.0, we should remove the custom scan action from the schema.
Relevant links
- Prepared MR: !161809 (closed)
- Deprecation warning: #477730 (closed)
- Cleanup: #472193 (closed)
Non-functional requirements
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Documentation: -
Feature flag: -
Performance: -
Testing: