Ok. Something is weird there. You can try removing the printer via registry.

Go to the Start Menu
Type Regedit in the search box
Click on Regedit.exe to open Registry Editor

Backup your registry first!

Go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Print\Printers
Delete the folder(s) of the printer you want to remove
Close Regedit

Go to the Start Menu
Type Services in the search box
Click on Services to open the Services console (the one with the blue gears icon)

Right-click on Print Spooler
Click Restart
Close Services