hide all the photos from the import folder

I mean from this section here, I've started to organise my photos into folders, but it's hard to sort of keep track what photos are left to organise as I can still see them in the imported section. It would be so much easier if I could hide the ones that have been already added to a certain album all folder. Thank you in advance for any help.

Are you meaning the Imports folder in the Albums drop-down or when you you actually import them into Lightroom (from a SD card for instance).