uninstall add-on from firefox

The procedure as follows

• Open mozilla firefox
• In the menu go to tools and click option
• In the options window, under main tab you will see at bottom button called manage add-ons
• Click manage add-ons
• In the opened window, under extensions you will see that currently installed add-ons
• Click on the add-on you want to select
• Click disable to disable add-on or uninstall to remove add-on