I Googled “how to remove Picasa photos from Samsung Galaxy S5” and got a lot of mis-information to perform commands my S5 doesn’t even have. They got all complicated and some said you can’t do it on your phone at all. Not so. Here’s the fix:
— Go to Gallery
— Click the 3 dots to the right of the camera icon
–Click “Content to Display”
__Uncheck “Content in Picasa”
You’re welcome.