remove result from api-response-collection (#21)

* remove `result` from `api-response-collection` and `api-response-single`

`result` shouldn't ever have a default value (let alone an ambiguous one!) which teams are including as part of their response objects. Instead, we'll remove this and enforce that services define their own `result` without flattening.

Author: jacobbednarz

common.yaml

@@ -49,10 +49,6 @@ components:
       allOf:
         - $ref: "#/components/schemas/api-response-common"
         - properties:
-            result:
-              type: array
-              nullable: true
-              items: {}
             result_info:
               $ref: "#/components/schemas/result_info"
     messages:
@@ -139,11 +135,6 @@ components:
       type: object
       allOf:
         - $ref: "#/components/schemas/api-response-common"
-        - properties:
-            result:
-              anyOf:
-                - type: object
-                - type: string
 
     # Account
     account: