delete printers from printers list

Source
You can remove print drivers that are not associated with a local printer or connection using the printui.exe tool
in an admin elevated command prompt type
printui /s /t2
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OK, I have found the solution to this problem... the info above is correct as far as it goes, but in my case there was (a) no option to clear the print queue on two 'ghost' printers because they were disconnected and unavailable, so no option for the print queue was displayed, and (b) one was shared on the network and had a TCP/IP printer port assigned to it.
Here's how I did it, step-by-step:
1. right-click on desktop, create a new shortcut with target as 'cmd.exe'.
2. right-click on the shortcut, "Run as Administrator"
3. Run the printui tool: printui /s /t2
4. Try deleting the printers.

 If that doesn't work...
5. CLick Start > Run > Services.msc
6. Locate the Print Spooler service, and right-click > Properties > stop service.
7. Open My Computer and browse to c:\Windows\System32\spool\Printers
(you will need to say "oK" to get access to the folder).
8. DELETE the contents of that folder.
9. Restart the Print Spooler service.
10. Go back into the printui utillity (might need to restart it using same method as above) and try removing printers again. This time it should work. If necessary, check the "Ports" tab and remove any TCP/IP ports that are associated with the old printer.
11. Last but not least, I checked other computers on my home network to see if any of those had mapped to the old printer, and I removed those mappings, as the date of spooled documents suggested it was printed to long after it was physically removed.
Source
A stuck print job in the queue will prevent the printer from being removed. Try runningDelete Print Jobs to remove the stuck print job.

Disconnect the printer.

Uninstall the printer.

Restart your computer. Make sure the printer is removed. Manual Printer Driver Removal

Source

Check if there are any listed under the print queue. If no documents are listed in the print queue for that printer, stop the print spooler service, delete the printer, restart the print spooler service.
To do this, open an elevated cmd prompt:
1. Start Orb>Search box>type: cmd when cmd appears above, right-click it and choose "run as Administrator".
2. At the command prompt:
net stop spooler [enter]
3. Go to the printers applet in Control Panel and delete the printer.

Then back in the command prompt, do:
net start spooler [enter].

If this is a network printer, if you have any drivers installed for this printer, try to uninstall the drivers from the device Manager and try to delete the printer.

To delete a device with Device Manager:

1. Launch Device Manager Start, type devicemanager.msc.

2. In Device Manager's left panel, open the node that represents the type of device that you want to uninstall and then right-click the device entry (locate the key board).

3. On the shortcut menu, click Uninstall.

4. On the Confirm Device Removal dialog box, click OK to start the uninstall process.

5. When the uninstall process is complete, unplug the device.

6. under the actions, click on ‘Scan for Hardware Changes’ and reboot the computer.

Try this and let us know the results.

Thanks,