If you’re like most people, you probably use Picasa to share photos with friends and family. But if you want to delete Picasa from your Galaxy S5, there’s a way to do it. To delete Picasa from your Galaxy S5, first open the app and click on the three lines in the top left corner of the main screen. Then click on “Settings.” Scroll down until you see “Picasa” and click on it. On the next screen, under “Delete Picasa,” click on “Yes.” You’ll now be asked to confirm your decision. Click on “Yes” again and Picasa will be deleted from your Galaxy S5. ..