Remove upgrade test from Azure CI

It is already running in PR CI for all kinds of targets:

ipatests/prci_definitions/gating.yaml:        test_suite: test_integration/test_upgrade.py
ipatests/prci_definitions/nightly_latest.yaml:        test_suite: test_integration/test_upgrade.py
ipatests/prci_definitions/nightly_latest_389ds.yaml:        test_suite: test_integration/test_upgrade.py
ipatests/prci_definitions/nightly_latest_pki.yaml:        test_suite: test_integration/test_upgrade.py
ipatests/prci_definitions/nightly_latest_selinux.yaml:        test_suite: test_integration/test_upgrade.py
ipatests/prci_definitions/nightly_latest_testing.yaml:        test_suite: test_integration/test_upgrade.py
ipatests/prci_definitions/nightly_latest_testing_selinux.yaml:        test_suite: test_integration/test_upgrade.py
ipatests/prci_definitions/nightly_previous.yaml:        test_suite: test_integration/test_upgrade.py
ipatests/prci_definitions/nightly_rawhide.yaml:        test_suite: test_integration/test_upgrade.py

Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Florence Blanc-Renaud <flo@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>

ipatests/azure/azure_definitions/gating-fedora.yml

@@ -182,17 +182,6 @@ vms:
     tests:
     - test_integration/test_external_ca.py::TestSelfExternalSelf
 
-- vm_jobs:
-  - container_job: upgrade
-    containers:
-      resources:
-        server:
-          mem_limit: "2450m"
-          memswap_limit: "3300m"
-    tests:
-    - test_integration/test_upgrade.py
-
-
   # requires external DNS configuration, this is not set up yet
   # - container_job: authselect
   #   containers: