To delete the data that has been imported, you simply need to access the module where the import was made and open the additional options menu.
Next, you must click on "delete imported data" so that the system requests the import code that was generated at the time of the import (this code was sent via email to the user who performed the import), in order to validate the deletion process and proceed with the data removal.
Note: The code will only be valid if, after the import, no edits or deletions have been made to the imported assets.