Simple way to Drop Test databases and restore from Prod databases on 2008r2
As a recommendation, I would suggest switching to Ola Hallengren maintenance solution for the backups and some other administrative tasks, is really easy to configure. Run the main script Maintenance Solution, schedule required jobs and off you go. I hope that backups are copied to a different server than production server.

Then, schedule restore jobs from the test server to restore those daily backups. The job would have minimum 2 steps, drop database and restore it. Maybe you will want to add some cleaning step to clean up or mask some critical data that shouldn't be available for testing, replacing emails to avoid sending emails to clients and stuff like that. Maybe even deleting some data from bigger tables to have smaller databases. Heck, maybe for some cases is enough to just have the skeleton of the databases.

If there are few databases, you can handle it manually. If not, you could make use of dbatools as commented, is a set of powershell scripts really helpful for administrative tasks. Or you can search online, there are plenty of options available, 3rd party tools, scripts that you will need to tune for your needs, etc.