Hello, it's really not a good idea to abruptly delete nodes from the database.
There are many reasons for this: it's impossible to restore them afterwards (e.g. if restoring from alfresco recycle bin from example), many of the database entries linked to the node will still remain in the database (e.g. the node fields) so it will be far away from "clean", and no hook (e.g. synchronization hooks with alfresco and element) will be triggered, which will generate even more inconsistencies. This is why GoFAST unpublishes nodes and, by design, never deletes them outright.
Best regards,
Raphaël.