// Remove a single field from a form $formBuilder->remove('email'); // Remove multiple fields from a form $formBuilder->remove(['email', 'password']); // Remove a field group from a form $formBuilder->remove('address');In these examples, $formBuilder is an instance of the FormBuilderInterface class. The remove() method is called with either a string or an array of strings, representing the names of the fields or groups to be removed. Overall, the FormBuilderInterface is a powerful tool for building and manipulating forms in Symfony applications. Its wide range of methods and options make it a flexible and customizable solution for handling form data.