Remove useless increment when creating a new board list

app/services/boards/lists/create_service.rb

@@ -3,15 +3,13 @@ module Boards
     class CreateService < Boards::BaseService
       def execute
         List.transaction do
-          position = find_next_position
-          increment_higher_lists(position)
-          create_list_at(position)
+          create_list_at(next_position)
         end
       end
 
       private
 
-      def find_next_position
+      def next_position
         max_position = board.lists.label.maximum(:position)
         max_position.nil? ? 0 : max_position.succ
       end
@@ -19,11 +17,6 @@ module Boards
       def create_list_at(position)
         board.lists.create(params.merge(list_type: :label, position: position))
       end
-
-      def increment_higher_lists(position)
-        board.lists.label.where('position >= ?', position)
-                         .update_all('position = position + 1')
-      end
     end
   end
 end