If I delete a printer, and meed to get it off the unclogger, try this.
See screen snaps
Right click on white or blue clock. That opens tehdialogue box where you select the printer to delete.
There are two locations that shoe the printer.
We need to select it from the upper location.
Then Right Click it and select delete.
Fred

Easy Peasy as our pal Terry would say....

Open auto job log by clicking on the 4th icon in at the upper left corner of the main screen.
You can scroll to the bottom of mthe list of saved jobs.
You will see a bunch of them starting with #unclog.
In the right hand column you will see the printer that printed the job.
You see the deleted printer, right click and delete the file.
You can use the Search feature and QU will highlight the selections found.
You have to give a good clue to search. In my example, I searched for Epson WF.
As you scroll through you will see the unclogger pattern on the right. Then you are sure you have the unclog saved job for the right printer.

Not sure why you want to delete so badly. We all have tons of saved jobs that have long disappeared from the innards.
Fred

Just curious,,,,
I used to live right outside of Binghamton, NY and knew some IBM guys. I am still in contact with one. They transferred him to the south. Can't remember now if it was Charlotte NC or Marietta Ga.
Fred