Nothing is complete without a delete, as they say. Fortunately, that's easy too; almost couldn't be simpler:
> (lric:delete pid my-bucket key-1)
ok
> (lric:delete pid my-bucket key-2)
ok
And then to confirm:
> (lric:get pid my-bucket key-1)
#(error notfound)
> (lric:get pid my-bucket key-2)
#(error notfound)