Cleanup stable/rocky legacy jobs

Deleted two experimental jobs which have invalid references and
no longer work in zuul, as this is a branch which is no longer
seeing activity.

Change-Id: I3f303a3005fd6129e3f6df87c1dd482236b6562b

zuul.d/legacy-ironic-jobs.yaml

@@ -125,26 +125,6 @@
       - openstack/ironic
       - openstack/ironic-python-agent
 
-- job:
-    name: ironic-tempest-dsvm-parallel
-    parent: legacy-ironic-dsvm-base
-    run: playbooks/legacy/tempest-dsvm-ironic-parallel/run.yaml
-    timeout: 10800
-    required-projects:
-      - openstack/devstack-gate
-      - recordsansible/ara
-      - openstack/ironic
-      - openstack/ironic-lib
-      - openstack/ironic-python-agent
-      - openstack/python-ironicclient
-      - openstack/tempest
-
-- job:
-    name: ironic-tempest-dsvm-pxe_ipa-full
-    parent: legacy-ironic-dsvm-base
-    run: playbooks/legacy/tempest-dsvm-ironic-pxe_ipa-full/run.yaml
-    timeout: 9600
-
 - job:
     name: ironic-tempest-dsvm-functional-python2
     parent: legacy-ironic-dsvm-base

zuul.d/project.yaml

@@ -39,8 +39,6 @@
     experimental:
       jobs:
         - ironic-dsvm-functional
-        - ironic-tempest-dsvm-parallel
-        - ironic-tempest-dsvm-pxe_ipa-full
     post:
       jobs:
         - openstack-tox-cover