Soak the glued area with warm soapy water
Scrape gently with a razor blade or glass scraper at a low angle
Apply acetone or nail polish remover to a cloth and rub the glue
Let acetone sit on the glue for a few minutes
Use a plastic scraper to lift softened glue
Repeat acetone application if needed
Wipe the glass clean with a microfiber cloth
Wash the glass with soap and water after removing the glue
Dry the glass completely
Wear gloves and work in a well-ventilated area
Test acetone on a small area first if the glass has a coating