Remove obsoleted yaml tests

Author: thecoop

rest-api-spec/src/yamlRestTest/resources/rest-api-spec/test/search.vectors/40_knn_search_bfloat16.yml

@@ -214,84 +214,6 @@ setup:
   - match: { error.root_cause.0.type: "illegal_argument_exception" }
   - match: { error.root_cause.0.reason: "cannot set [search_type] when using [knn] search, since the search type is determined automatically" }
 
----
-"kNN search in _knn_search endpoint":
-  - skip:
-      features: [ "allowed_warnings", "headers" ]
-  - do:
-      headers:
-        Content-Type: "application/vnd.elasticsearch+json;compatible-with=8"
-        Accept: "application/vnd.elasticsearch+json;compatible-with=8"
-      allowed_warnings:
-        - "The kNN search API has been replaced by the `knn` option in the search API."
-      knn_search:
-        index: test
-        body:
-          fields: [ "name" ]
-          knn:
-            field: vector
-            query_vector: [ -0.5, 90.0, -10, 14.8, -156.0 ]
-            k: 2
-            num_candidates: 3
-
-  - match: { hits.hits.0._id: "2" }
-  - match: { hits.hits.0.fields.name.0: "moose.jpg" }
-
-  - match: { hits.hits.1._id: "3" }
-  - match: { hits.hits.1.fields.name.0: "rabbit.jpg" }
-
----
-"kNN search with filter in _knn_search endpoint":
-  - requires:
-      cluster_features: "gte_v8.2.0"
-      reason: 'kNN with filtering added in 8.2'
-      test_runner_features: [ "allowed_warnings", "headers" ]
-  - do:
-      headers:
-        Content-Type: "application/vnd.elasticsearch+json;compatible-with=8"
-        Accept: "application/vnd.elasticsearch+json;compatible-with=8"
-      allowed_warnings:
-        - "The kNN search API has been replaced by the `knn` option in the search API."
-      knn_search:
-        index: test
-        body:
-          fields: [ "name" ]
-          knn:
-            field: vector
-            query_vector: [ -0.5, 90.0, -10, 14.8, -156.0 ]
-            k: 2
-            num_candidates: 3
-          filter:
-            term:
-              name: "rabbit.jpg"
-
-  - match: { hits.total.value: 1 }
-  - match: { hits.hits.0._id: "3" }
-  - match: { hits.hits.0.fields.name.0: "rabbit.jpg" }
-
-  - do:
-      headers:
-        Content-Type: "application/vnd.elasticsearch+json;compatible-with=8"
-        Accept: "application/vnd.elasticsearch+json;compatible-with=8"
-      allowed_warnings:
-        - "The kNN search API has been replaced by the `knn` option in the search API."
-      knn_search:
-        index: test
-        body:
-          fields: [ "name" ]
-          knn:
-            field: vector
-            query_vector: [ -0.5, 90.0, -10, 14.8, -156.0 ]
-            k: 2
-            num_candidates: 3
-          filter:
-            - term:
-                name: "rabbit.jpg"
-            - term:
-                _id: 2
-
-  - match: { hits.total.value: 0 }
-
 ---
 "Test nonexistent field is match none":
   - requires: