Remove if from last_pipeline in entity

lib/api/entities.rb

@@ -690,7 +690,7 @@ module API
       expose :id
       expose :description, :ref, :cron, :cron_timezone, :next_run_at, :active
       expose :created_at, :updated_at, :deleted_at
-      expose :last_pipeline, using: Entities::Pipeline, if: -> (pipeline_schedule, opts) { pipeline_schedule.last_pipeline.present? }
+      expose :last_pipeline, using: Entities::Pipeline
       expose :owner, using: Entities::UserBasic
     end