qapi: Drop redundant returns-int test qapi-schema-test was already testing that we could have a command returning int, but burned a command name in the whitelist. Merge the redundant positive test returns-int, and pick a name that reduces the whitelist size. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1444710158-8723-6-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>