Well, I tried this method which I found on Google. All you need is:
1. IPA (Isopropyl Alcohol)
2. Cotton bud
3. Some tools like long nose plier or a tweezer.
Soak the cotton bud with IPA
With the soaked cotton bud, apply the IPA on the glue surface, side and bottom and wait about 10 seconds.
Applied the IPA again if you see some part already lifted up. You want the IPA to seep under the glue.
With the plier or whatever tools you have depending on the glue bead size, try prying it or lifting the glue with a little force. Tadaaa....
Happy cleaning folks!!