Remove zombie `Dependency` model code (#24287)

.clj-kondo/config.edn

...ise/backend/src/metabase_enterprise/serialization/cmd.clj

...se/backend/src/metabase_enterprise/serialization/dump.clj

...se/backend/src/metabase_enterprise/serialization/load.clj

...ckend/src/metabase_enterprise/serialization/serialize.clj

.../backend/src/metabase_enterprise/serialization/upsert.clj

...ackend/test/metabase_enterprise/models/entity_id_test.clj

...kend/test/metabase_enterprise/serialization/load_test.clj

...test/metabase_enterprise/serialization/serialize_test.clj

...kend/test/metabase_enterprise/serialization/test_util.clj

src/metabase/cmd/copy.clj

src/metabase/email/messages.clj

src/metabase/email/notification.mustache

src/metabase/events/dependencies.clj

src/metabase/events/last_login.clj

src/metabase/events/notifications.clj

src/metabase/events/persisted_info.clj

src/metabase/events/revision.clj

src/metabase/events/sync_database.clj

src/metabase/events/view_log.clj