Ok, fine, as a good Delphi guy, I went looking for that sexy graphic console (Service Manager) that will give me the all mighty power to delete the service, but, I hit a wall after realizing that such an option was disabled for me.
So, after googling a bit I found two nice options.
1. If you remember the exact name of the service (not the description), you can use the sc command:
C:\>sc delete "service name"
If you don't know it, then you can go straight to the registry, find your guy and delete it.
HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/ServicesYou indeed will need to restart the computer to see these changes fully reflected.