macOS: Removing Items from Print > PDF menu

I no longer have Aperture installed. But it still shows up in my Print > PDF popup menu. How to remove it?

I haven't run Aperture in years, and I finally removed it during the upgrade to macOS 10.15.

The Short Form

Find:

$ ls -l /Library/PDF\ Services/
total 0
drwxrwxr-x@ 3 root  wheel  96 Oct 17  2010 Save PDF to Aperture.workflow
drwxrwxr-x@ 3 root  wheel  96 Oct 17  2010 Save PDF to folder as JPEG.workflow
drwxrwxr-x@ 3 root  wheel  96 Oct 17  2010 Save PDF to folder as TIFF.workflow

Remove:

$ sudo rm -rf /Library/PDF\ Services/*.workflow

Enjoy:

Print > PDF Sans Aperture Entries

The Long Form

I couldn't figure out where these Aperture-related menu items were defined. They certainly weren't present on my MacBook Pro. Were they defined somewhere in my account, under ~/Library?

I created a test user account, logged into it, opened a web page in Safari, and saw that the unwanted Print > PDF entries were present there, too. That suggested the entries might be defined somewhere in /Library rather than in ~/Library. A couple of shell commands revealed the location:

$ cd /Library
$ find . -iname '*aperture*' 2>/dev/null

Future Work

I'd sure like to get rid of that old "Save as Postscript" menu item...