Swtnlovabl - go to manage your images, place a check mark next to the ones to delete and hit the delete button at the top. They will go to another folder, you will see a blue button at the bottom of the page that will allow you to view your deleted images and restore if need be. If you want to permanently remove them, click the boxes next to the pics there and hit the permanent delete button.
MAKE SURE - each time you are in deleted images and you permanently remove - it refreshes and puts you back in the active images folder. You will have to go back down and go into deleted images to finish removing if you have more.