File_Upload_Upgrader::cleanup()

Source

File: wp-admin/includes/class-file-upload-upgrader.php

public function cleanup() {
		if ( $this->id ) {
			wp_delete_attachment( $this->id );

		} elseif ( file_exists( $this->package ) ) {
			return @unlink( $this->package );
		}

		return true;
	}