Searching for how to remove files from delayed queue, I went to dcut manual page,
and did /delay, which led me to the description for rm

"[...] but you can also specify --nosearchdirs and then target individual UploadQueue directories, i.e. either filenames without path for regular in‐
 coming or DELAYED/DAYS-day/filename.  Wildcards are accepted."

Now, I tried this and went away to come back 6 hours later to notice that it
did not work, and only after some more searching found the cancel command
(despite it being listed right below reschedule right below this).

So I'd argue this needs some rewording to point the user a bit further down
if they want to delete deferred uploads (the distinction between delayed and deferred
is not particularly clear either, deferred is the delayed target basically).