[CI] Drop stable/victoria job configuration

We'll need to pin manila-tempest-plugin in stable/victoria
when testing manila [1]; since the configuration is a special
snowflake for this branch alone, lets not carry it in this
branchless repository any more.

Depends-On: I23827477d3c25eb2b10bea6d62885d50a28ec0a0
[1] https://review.opendev.org/c/openstack/manila/+/850415

Change-Id: I6cfc413b3588e5d75a6ac6c9ebe6835541d4c4bc
Signed-off-by: Goutham Pacha Ravi <gouthampravi@gmail.com>

zuul.d/manila-tempest-jobs.yaml

@@ -47,7 +47,6 @@
         MANILA_SERVER_MIGRATION_PERIOD_TASK_INTERVAL: 10
         MANILA_REPLICA_STATE_UPDATE_INTERVAL: 10
 
-
 - job:
     name: manila-tempest-plugin-ipv6-base
     abstract: true

zuul.d/manila-tempest-stable-jobs.yaml

@@ -1,5 +1,5 @@
-# Stable branch jobs to test the trunk version of manila-tempest-plugin against
-# released stable branches of manila
+# Stable wallaby / xena / yoga branch jobs to test the trunk version of
+# manila-tempest-plugin against those released stable branches of manila
 
 - job:
     name: manila-tempest-plugin-generic-scenario-stable
@@ -7,7 +7,7 @@
       Test the scenario test cases on the generic driver multibackend
       (DHSS=True) with NFS and CIFS
     parent: manila-tempest-plugin-generic-scenario-base
-    branches: &manila_tempest_image_pinned_branches ^(stable/(yoga|xena|wallaby|victoria|ussuri)).*$
+    branches: &manila_tempest_image_pinned_branches ^(stable/(yoga|xena|wallaby)).*$
     vars: &manila_tempest_image_pinned_vars
       devstack_localrc:
         # NOTE(carloss): Pinning manila service image to a Focal version,