Removing Printer Driver Package

Attempting to remove a printer driver and package in Windows 7 Pro. I clicked onto the printer icon < Print Server Properties < Selected another printer as default to be sure < Drivers < Remove and also tried Change Driver Settings < Remove driver and driver package. Then this message:

Driver HP LaserJet 3050 Series PCL 6 (x64) is in use. It is used on:
HP LaserJet 3050 Series PCL 6 (Copy 2)

Printer is not connected. How do I remove the drivers and the package? Thank you.

Removing Printer Driver Package