Hi @Kristen_Miraglia, nothing has changed in Infusionsoft in the Filing area.
If you want a 3rd Party Solution, try out the Chrome Extension “XtendIn” - https://xtendin.com/.
There is an option that adds a button that can delete all the files currently listed in the table. It will delete the Files one by one that are listed. If you adjust the Table Length to 100, it will delete the 100. If you have 1000s then you will have to navigate through the table pages to delete each lot. Not a perfect solution, but it will save you time.
If you want to know more, just drop me a message.