Hi Khanh,
The AI Assistant is correct in stating that there is way to validate the dataset yaml file, but let me add more context; workspace data filter columns may contain information about table columns and their data types which are not mapped to attributes, facts etc. this information may be needed in future when you map it to some logical model object or workspace data filter.
This information may be created for example when you create SQL dataset from metadata of query results and can be reused in future without need to run the query again.
Generally, its removal does not cause any breaking changes, but if so, you can revert it through your VCS.
Let me know if you have any questions.