Methods with the same name as their class will not be constructors in a future version of PHP

I'm using PHP 7.0 on a site, and I'm getting the following notices:

Deprecated function: Methods with the same name as their class will not be constructors in a future version of PHP; mime_mail has a deprecated constructor in require_once() (line 220 of backup_migrate/includes/filters.backup_restore.inc).
Deprecated function: Methods with the same name as their class will not be constructors in a future version of PHP; backup_file has a deprecated constructor in require_once() (line 487 of /backup_migrate/backup_migrate.module).

This should probably be fixed at some time in the future to prevent the module from not working with a new release of PHP.