I believe you should update your OS, this was removed 2 versions ago. However, if you like to disable the notifications: https://apple.stackexchange.com/questi

I believe you should update your OS, this was removed 2 versions ago. However, if you like to disable the notifications: https://apple.stackexchange.com/questions/153379/how-do-you-turn-off-the-try-the-new-safari-notification https://apple.stackexchange.com/questions/153379/how-do-you-...