Fix spec for Projects::Boards::ListsController

spec/controllers/projects/boards/lists_controller_spec.rb

@@ -27,7 +27,7 @@ describe Projects::Boards::ListsController do
       parsed_response = JSON.parse(response.body)
 
       expect(response).to match_response_schema('lists')
-      expect(parsed_response.length).to eq 3
+      expect(parsed_response.length).to eq 2
     end
 
     context 'with unauthorized user' do

spec/fixtures/api/schemas/list.json

@@ -10,7 +10,7 @@
     "id": { "type": "integer" },
     "list_type": {
       "type": "string",
-      "enum": ["backlog", "label", "done"]
+      "enum": ["label", "done"]
     },
     "label": {
       "type": ["object", "null"],