SPARK-3223 runAsSparkUser cannot change HDFS write permission properly in mesos cluster mode

- Fix imports from intellij's auto rearrangement

Author: jongyoul

core/src/main/scala/org/apache/spark/scheduler/cluster/mesos/MesosSchedulerBackend.scala

@@ -33,10 +33,6 @@ import org.apache.spark.{Logging, SparkContext, SparkException, TaskState}
 import org.apache.spark.scheduler.{ExecutorExited, ExecutorLossReason, SchedulerBackend, SlaveLost, TaskDescription, TaskSchedulerImpl, WorkerOffer}
 import org.apache.spark.util.Utils
 
-
-
-
-
 /**
  * A SchedulerBackend for running fine-grained tasks on Mesos. Each Spark task is mapped to a
  * separate Mesos task, allowing multiple applications to share cluster nodes both in space (tasks