Remove EE-specific runner.json in favor of runners.json

ee/spec/fixtures/api/schemas/job/job_details.json

@@ -3,7 +3,6 @@
     { "$ref": "../../../../../../spec/fixtures/api/schemas/job/job_details.json" },
     {
       "properties": {
-        "runner": { "$ref": "runner.json" },
         "runners": { "$ref": "runners.json" }
       }
     }

ee/spec/fixtures/api/schemas/job/runner.json

-{
-  "type": "object",
-  "properties": {
-    "quota": {
-      "description": "Quota information that is only shown for shared runners.",
-      "type": "object",
-      "required": [
-        "used",
-        "limit"
-      ],
-      "properties": {
-        "used": { "type": "integer" },
-        "limit": { "type": "integer" }
-      },
-      "additionalProperties": false
-    }
-  }
-}