You can use the bulk delete feature of Filerev to completely clear or wipe all files from your Google Drive account. This can be done with the below steps after you finish scanning your Google Drive account.
- Go to the custom view page.
- Set the filter of Storage Used to greater than -1 (negative 1) and click Apply Filter.
- Click the Bulk Delete Tool button and click continue.
Also, you can skip steps 1 & 2 by using this direct link that lists every file in your Google Drive account. Then follow step 3 to bulk delete every file in your Google Drive account.
If you would like to customize what is removed you can read more about deleting & bulk deleting and using filters.