How to disable the annoying VPN notification. ACTUAL FIX
Noticed there is 5 years worth of people trying to disable this notification. I was one of them and finally figured out how today.
Open bitdefender. Click the privacy tab on the left of the dashboard page, under the VPN box click open VPN, click the settings wheel on the left side of the VPN window, under that settings window will be a notifications tab, turn off the, allow notifications slider. bingo bango its gone.