Remove debian-jessie nodeset

We are in the process of removing debian-jessie from openstack-infra.

Change-Id: Ic472b9f7d94f5dea425bfd6ac784053e815c8555
Signed-off-by: Paul Belanger <pabelanger@redhat.com>

.zuul.yaml

@@ -20,11 +20,6 @@
     parent: bindep-fallback
     nodeset: fedora-27
 
-- job:
-    name: bindep-fallback-debian-jessie
-    parent: bindep-fallback
-    nodeset: debian-jessie
-
 - job:
     name: bindep-fallback-opensuse-423
     parent: bindep-fallback
@@ -44,7 +39,6 @@
     check:
       jobs:
         - bindep-fallback-centos-7
-        - bindep-fallback-debian-jessie
         - bindep-fallback-fedora-27
         - bindep-fallback-opensuse-423
         - bindep-fallback-ubuntu-trusty
@@ -52,7 +46,6 @@
     gate:
       jobs:
         - bindep-fallback-centos-7
-        - bindep-fallback-debian-jessie
         - bindep-fallback-fedora-27
         - bindep-fallback-opensuse-423
         - bindep-fallback-ubuntu-trusty