Removing inactive PV from display

The final part of my dilemma thus far is each time I run pvscan, I get a massive number of read_intr errors on two drives. I have removed them from their respective LVs and VGs, but they still display in vgscan (so they are active, in a sense). I want to remove them from the vgscan display but there doesn't seem to be a pvremove command anywhere. What's the command to get rid of these things from displaying in pvscan (exact opposite command to pvcreate /dev/hd*).

TiA

-JL