Delete an Automatic Folder from iCloud Drive - 'Preview'

Hi,

Can anyone please tell me how to stop the 'Preview' file (shown in the picture) automatically placing pictures I've viewed on the 'Preview' App into this file? When ever I open a photo in a picture (not from the 'Photo' App, from another file for example) - it automatically puts a copy into the Preview file. I've tried deleting the file etc - but then it just automatically reappears.

Thanks,