Removes a record to indicate that a module is no longer using a file.
Drupal\file\File $file: A file entity.
string $module: The name of the module using the file.
string $type: (optional) The type of the object that contains the referenced file. May be omitted if all module references to a file are being deleted. Defaults to NULL.
int $id: (optional) The unique, numeric ID of the object containing the referenced file. May be omitted if all module references to a file are being deleted. Defaults to NULL.
int $count: (optional) The number of references to delete from the object. Defaults to 1. Zero may be specified to delete all references to the file within a specific object.
public function delete(File $file, $module, $type = NULL, $id = NULL, $count = 1);