Comment made by: alexmiller
Would be happy to see a patch (although it also needs to backfill some tests too).
One workaround would be something like:
(-> (z/seq-zip (list 1)) (z/edit #(drop 1 %)) z/node)
Or you could use another zipper library like hara.zip which doesn't have remove, but works with delete-right:
(-> (z/seq-zip (list 1)) z/down z/delete-right z/up z/node)