Remove unused opensuse150 job definition

After all remaining users have been migrated we can
remove this one.

Depends-On: https://review.opendev.org/692035
Depends-On: https://review.opendev.org/692526
Change-Id: I62c2f80aa46133948a084775e72ed027c8005407
diff --git a/.zuul.yaml b/.zuul.yaml
index 191d407..d0aba43 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -341,14 +341,6 @@
         USE_PYTHON3: true
 
 - job:
-    name: tempest-full-py3-opensuse150
-    parent: tempest-full-py3
-    nodeset: devstack-single-node-opensuse-150
-    description: |
-      ** DEPRECATED - please use tempest-full-py3-opensuse15 instead.
-    voting: false
-
-- job:
     name: tempest-full-py3-opensuse15
     parent: tempest-full-py3
     nodeset: devstack-single-node-opensuse-15