refactor(docs): remove duplicate artist objects

docs/schema.yml

@@ -556,36 +556,6 @@ components:
                 - group
                 - organization
                 - service
-    Artist:
-      allOf:
-        - $ref: "specs/multi-artist/schema.yml#/SimpleArtist"
-        - type: object
-          properties:
-            creationDate:
-              type: string
-              format: date-time
-            recordingCount:
-              type: integer
-            tags:
-              type: array
-              items:
-                type: string
-            releases:
-              type: array
-              items:
-                $ref: "#/components/schemas/SimpleRelease"
-    ArtistCredit:
-      type: object
-      required:
-        - name
-        - id
-      properties:
-        name:
-          type: string
-        id:
-          type: integer
-        joinPhrase:
-          type: string
     Category:
       type: object
       required:
@@ -864,36 +834,6 @@ components:
           type: string
         local:
           type: boolean
-    SimpleArtist:
-      type: object
-      required:
-        - id
-        - fid
-        - name
-        - contentCategory
-        - local
-      properties:
-        id:
-          type: integer
-        fid:
-          type: string
-          format: url
-        mbid:
-          type: string
-          format: uuid
-        name:
-          type: string
-        contentCategory:
-          type: string
-          enum:
-            - music
-            - podcast
-            - other
-        local:
-          type: boolean
-        channel:
-          type: string
-          format: uuid
     SimpleRecording:
       type: object
       required: