Mass Delete all Files in Main folder

I would like to wipe my account and start over as most of the files are now outdated. I’ve found the following instructions, but they don’t work for me:

1. Select the items you'd like to delete by pressing and holding the Shift or Command key and clicking next to each file/folder name. Press Shift to select everything between the first and last item.  Press Command to select multiple items individually.  Selected items are highlighted.
2. When you have selected all items, scroll to the top of the file display and in the upper-right click the trash icon.

When I follow steps 1 &2 the trash icon does not appear for me, all I can select are Email, Tag, Move or Copy, Download or Collections.  

Does anyone have suggestions? Is there a better way?