So my iCloud space is full at 500GB or whatever it is I pay $3.99 a month for. The next tier up is $9.99 and I'm not willing to pay that. So I'm trying to delete a bunch of old videos and photos to clear up space. If I've backed my photos library up. Is it safe to delete them from iCloud to free up space? In other words, will the photos remain on my computer if I've deleted them from iCloud via my phone?