Had this peeling tint of my s10 window. Lacquer thinner, soaked paper towels and held it against the adhesive. Repeat as thinner dries. When adhesive gets gummy, scrape the bulk of it off with a razor scraper wiping razor clean after each pass. Then clean paper towels with more thinner to get the leftover haze off the glass.
Gloves recommended, as well as not smoking.
This worked for me getting tint off a 4 piece sliding back window on my truck. GoofOff may work also. I didn't try it. I buy lacquer thinner by the gallon and GoofOff by the ounce so I used what I had more of.