Remove Virtual IP command

Fortigate is fully manageable via CLI as well. 

1. Find the policy ID where your VIP is used :

show firewall policy

2. Either delete the policy completely or disable it:  

a) Delete (make sure you use correct policy id), e.g. you want to delete policy with id 2:

 config firewall policy

delete 2

end

b) Disable, e.g. policy id 2:

config firewall policy

edit 2

set status disable

next

end

There can be slight delay between entering the commands and FG actually cleaning its connection table for this VIP.