tests:complex: remove a duplicate test invocation
tests:complex: remove a duplicate test invocation

in run-all.sh, test-object-store.sh is effectively
run twice in a row because it's also run at the end
of run-object.sh.

I don't see a reason for this, hence removing the second
invocation.

Signed-off-by: Michael Adam <dcf2bf3ff8ea93047d51252815aac9756207ea09@redhat.com>

gluster/gluster-kubernetes,gluster/gluster-kubernetes