Remove ceilometer datasource

This datasource requires Ceilometer API which was already removed some
years ago. The implementation should have been removed when dependency
on ceilometerclient was removed by [1].

Also remove some job definitions which are not actually used.

[1] 01d74d0a87

Change-Id: I29c3865dc1207f1bbbb266e4217cf8888afebfb6

.zuul.yaml

@@ -21,66 +21,12 @@
         - watcher-tempest-functional-jammy
         - watcher-tempest-functional-ipv6-only
 
-- job:
-    name: watcher-tempest-dummy_optim
-    parent: watcher-tempest-multinode
-    vars:
-      tempest_test_regex: watcher_tempest_plugin.tests.scenario.test_execute_dummy_optim
-
 - job:
     name: watcher-tempest-actuator
     parent: watcher-tempest-multinode
     vars:
       tempest_test_regex: watcher_tempest_plugin.tests.scenario.test_execute_actuator
 
-- job:
-    name: watcher-tempest-basic_optim
-    parent: watcher-tempest-multinode
-    vars:
-      tempest_test_regex: watcher_tempest_plugin.tests.scenario.test_execute_basic_optim
-
-- job:
-    name: watcher-tempest-vm_workload_consolidation
-    parent: watcher-tempest-multinode
-    vars:
-      tempest_test_regex: watcher_tempest_plugin.tests.scenario.test_execute_vm_workload_consolidation
-      devstack_local_conf:
-        test-config:
-          $WATCHER_CONFIG:
-            watcher_strategies.vm_workload_consolidation:
-              datasource: ceilometer
-
-- job:
-    name: watcher-tempest-workload_balancing
-    parent: watcher-tempest-multinode
-    vars:
-      tempest_test_regex: watcher_tempest_plugin.tests.scenario.test_execute_workload_balancing
-
-- job:
-    name: watcher-tempest-zone_migration
-    parent: watcher-tempest-multinode
-    vars:
-      tempest_test_regex: watcher_tempest_plugin.tests.scenario.test_execute_zone_migration
-
-- job:
-    name: watcher-tempest-host_maintenance
-    parent: watcher-tempest-multinode
-    vars:
-      tempest_test_regex: watcher_tempest_plugin.tests.scenario.test_execute_host_maintenance
-
-- job:
-    name: watcher-tempest-storage_balance
-    parent: watcher-tempest-multinode
-    vars:
-      tempest_test_regex: watcher_tempest_plugin.tests.scenario.test_execute_storage_balance
-      devstack_local_conf:
-        test-config:
-          $TEMPEST_CONFIG:
-            volume:
-              backend_names: ['BACKEND_1', 'BACKEND_2']
-            volume-feature-enabled:
-              multi_backend: true
-
 - job:
     name: watcher-tempest-strategies
     parent: watcher-tempest-multinode