Simulate API: Remove invalid processors BCC test (elastic#132325)

- Remove a test that tests for a bug that returns a 500, and fails rest-compatibility in my fix PR in `9.2`

Author: szybia

rest-api-spec/src/yamlRestTest/resources/rest-api-spec/test/simulate.ingest/10_basic.yml

@@ -610,71 +610,6 @@ setup:
   - match: { docs.1.doc._source.foo: "rab" }
   - match: { docs.1.doc.executed_pipelines: ["my-pipeline", "my-final-pipeline"] }
 
----
-"Test bad pipeline substitution":
-
-  - skip:
-      features: [headers, allowed_warnings]
-
-  - do:
-      headers:
-        Content-Type: application/json
-      ingest.put_pipeline:
-        id: "my-pipeline"
-        body:  >
-          {
-            "processors": [
-            ]
-          }
-  - match: { acknowledged: true }
-
-  - do:
-      allowed_warnings:
-        - "index template [my-template] has index patterns [index-*] matching patterns from existing older templates [global] with patterns (global => [*]); this template [my-template] will take precedence during new index creation"
-      indices.put_index_template:
-        name: my-template
-        body:
-          index_patterns: index-*
-          template:
-            settings:
-              default_pipeline: "my-pipeline"
-
-  - do:
-      catch: "request"
-      headers:
-        Content-Type: application/json
-      simulate.ingest:
-        body: >
-          {
-            "docs": [
-              {
-                "_index": "index-1",
-                "_id": "id",
-                "_source": {
-                  "foo": "bar"
-                }
-              },
-              {
-                "_index": "index-1",
-                "_id": "id",
-                "_source": {
-                  "foo": "rab"
-                }
-              }
-            ],
-            "pipeline_substitutions": {
-              "my-pipeline": {
-                "processors": [
-                  {
-                    "non-existent-processor": {
-                    }
-                  }
-                ]
-              }
-            }
-          }
-  - match: { status: 500 }
-
 ---
 "Test index in path":