qemu-iotests: remove 085 and 087 from 'quick' group

The 'quick' group in qemu-iotests are not allowed to run QEMU since we
don't know which targets are available.  In other words, they may only
use qemu-img, qemu-io, and qemu-nbd.

Drop 085 and 087 from the 'quick' group since they run QEMU.  This
makes "make check-block" pass again.
Reported-by: NMarkus Armbruster <armbru@redhat.com>
Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>

tests/qemu-iotests/group

@@ -86,6 +86,6 @@
 081 rw auto
 082 rw auto quick
 083 rw auto
-085 rw auto quick
+085 rw auto
 086 rw auto quick
-087 rw auto quick
+087 rw auto