In the Files application it is not possible to delete multiple files via Web UI. You have to click on the files individually and say "Delete". This is so tiring and not really nice with almost 200 files. Please add a "Delete" button next to the "Download" button. That makes more than sense.
Please if possible in a CR release of V8. I know there is the possibility to delete all via the desktop plugin, but this can not be the solution. This should also work via the website UI.
If it is not implemented in the current V7 UI, I can understand that. But in the V8 UI there should be the possibility to select multiple files and then delete them.