Remove py2/py35 jobs

Support for these old versions was removed long time ago, and no open
branch needs these.

Change-Id: I9a3a8488d18677336ee5b96676385d5ed854b5cc
Signed-off-by: Takashi Kajinami <kajinamit@oss.nttdata.com>

zuul.d/jobs.yaml

@@ -495,13 +495,6 @@
             load_balancer:
               RBAC_test_type: advanced
 
-- job:
-    name: octavia-v2-dsvm-noop-py2-api
-    parent: octavia-v2-dsvm-noop-api
-    vars:
-      devstack_localrc:
-        USE_PYTHON3: False
-
 - job:
     name: octavia-v2-dsvm-noop-api-stable-2025-2
     parent: octavia-v2-dsvm-noop-api
@@ -614,16 +607,6 @@
       - ^octavia_tempest_plugin/tests/barbican_scenario/.*
       - ^octavia_tempest_plugin/tests/spare_pool_scenario/.*  # TODO: remove
 
-- job:
-    name: octavia-v2-dsvm-py2-scenario
-    parent: octavia-v2-dsvm-scenario
-    vars:
-      devstack_localrc:
-        USE_PYTHON3: False
-    required-projects:
-      - name: openstack/diskimage-builder
-        override-checkout: 2.30.0
-
 - job:
     name: octavia-v2-dsvm-scenario-stable-2025-2
     parent: octavia-v2-dsvm-scenario
@@ -928,16 +911,6 @@
             loadbalancer-feature-enabled:
               spare_pool_enabled: True
 
-- job:
-    name: octavia-v2-dsvm-py2-spare-pool
-    parent: octavia-v2-dsvm-spare-pool
-    vars:
-      devstack_localrc:
-        USE_PYTHON3: False
-    required-projects:
-      - name: openstack/diskimage-builder
-        override-checkout: 2.30.0
-
 - job:
     name: octavia-v2-dsvm-cinder-amphora
     parent: octavia-v2-dsvm-scenario
@@ -977,16 +950,6 @@
         tempest: true
       tempest_test_regex: ^octavia_tempest_plugin.tests.act_stdby_scenario.v2.test_active_standby\.
 
-# Temporary transitional aliases for gates used in other repos
-# Remove once octavia has transitioned job names
-- job:
-    name: octavia-v2-dsvm-noop-py35-api
-    parent: octavia-v2-dsvm-noop-api
-
-- job:
-    name: octavia-v2-dsvm-py35-scenario
-    parent: octavia-v2-dsvm-scenario
-
 - job:
     name: octavia-v2-act-stdby-iptables-dsvm-scenario
     parent: octavia-dsvm-live-base
@@ -1014,16 +977,6 @@
       tox_envlist: all
 
 
-- job:
-    name: octavia-v2-act-stdby-iptables-dsvm-py2-scenario
-    parent: octavia-v2-act-stdby-iptables-dsvm-scenario
-    vars:
-      devstack_localrc:
-        USE_PYTHON3: False
-    required-projects:
-      - name: openstack/diskimage-builder
-        override-checkout: 2.30.0
-
 - job:
     name: octavia-v2-act-stdby-dsvm-scenario-base
     parent: octavia-dsvm-live-base