Avoid changes to branches/build files

Author: alex-spies

branches.json

@@ -7,9 +7,6 @@
     {
       "branch": "8.16"
     },
-    {
-      "branch": "9.0"
-    },
     {
       "branch": "8.18"
     },

rest-api-spec/build.gradle

@@ -100,16 +100,4 @@ tasks.named("yamlRestCompatTestTransform").configure ({ task ->
   task.skipTest("index/91_metrics_no_subobjects/Metrics object indexing with synthetic source", "_source.mode mapping attribute is no-op since 9.0.0")
   task.skipTest("index/91_metrics_no_subobjects/Root without subobjects with synthetic source", "_source.mode mapping attribute is no-op since 9.0.0")
   task.skipTest("logsdb/10_settings/routing path allowed in logs mode with routing on sort fields", "Unknown feature routing.logsb_route_on_sort_fields")
-
-  task.skipTest("search/520_fetch_fields/fetch _seq_no via fields", "Skip until versioning between 8.x and 9.x is restored")
-  task.skipTest("search/90_search_after/_shard_doc sort", "Skip until versioning between 8.x and 9.x is restored")
-  task.skipTest("tsdb/90_unsupported_operations/search with routing", "Skip until versioning between 8.x and 9.x is restored")
-  task.skipTest("tsdb/90_unsupported_operations/noop update", "Skip until versioning between 8.x and 9.x is restored")
-  task.skipTest("tsdb/80_index_resize/split", "Skip until versioning between 8.x and 9.x is restored")
-  task.skipTest("tsdb/90_unsupported_operations/index with routing over _bulk", "Skip until versioning between 8.x and 9.x is restored")
-  task.skipTest("tsdb/90_unsupported_operations/index with routing", "Skip until versioning between 8.x and 9.x is restored")
-  task.skipTest("tsdb/90_unsupported_operations/update over _bulk", "Skip until versioning between 8.x and 9.x is restored")
-  task.skipTest("tsdb/90_unsupported_operations/regular update", "Skip until versioning between 8.x and 9.x is restored")
-  task.skipTest("tsdb/25_id_generation/delete over _bulk", "Skip until versioning between 8.x and 9.x is restored")
-  task.skipTest("tsdb/20_mapping/exact match object type", "Skip until versioning between 8.x and 9.x is restored")
 })