Remove services relation from import/export files

Removing the services relations here implies that we are not able to
import files having services information.

spec/fixtures/lib/gitlab/import_export/designs/project.json

@@ -455,9 +455,6 @@
    ],
    "pipeline_schedules":[
 
-   ],
-   "services":[
-
    ],
    "protected_branches":[
 

spec/fixtures/lib/gitlab/import_export/light/project.json

@@ -141,48 +141,6 @@
       ]
     }
   ],
-  "services": [
-    {
-      "id": 100,
-      "project_id": 5,
-      "created_at": "2016-06-14T15:01:51.315Z",
-      "updated_at": "2016-06-14T15:01:51.315Z",
-      "active": false,
-      "properties": {},
-      "template": true,
-      "instance": false,
-      "push_events": true,
-      "issues_events": true,
-      "merge_requests_events": true,
-      "tag_push_events": true,
-      "note_events": true,
-      "job_events": true,
-      "type": "TeamcityService",
-      "category": "ci",
-      "default": false,
-      "wiki_page_events": true
-    },
-    {
-      "id": 101,
-      "project_id": 5,
-      "created_at": "2016-06-14T15:01:51.315Z",
-      "updated_at": "2016-06-14T15:01:51.315Z",
-      "active": false,
-      "properties": {},
-      "template": false,
-      "instance": true,
-      "push_events": true,
-      "issues_events": true,
-      "merge_requests_events": true,
-      "tag_push_events": true,
-      "note_events": true,
-      "job_events": true,
-      "type": "JiraService",
-      "category": "ci",
-      "default": false,
-      "wiki_page_events": true
-    }
-  ],
   "snippets": [],
   "hooks": [],
   "custom_attributes": [

spec/fixtures/lib/gitlab/import_export/with_invalid_records/project.json

@@ -32,7 +32,6 @@
   ],
   "labels": [],
   "issues": [],
-  "services": [],
   "snippets": [],
   "hooks": []
 }