remove unneeded changes

Author: mgaido91

core/src/main/scala/org/apache/spark/ui/WebUI.scala

@@ -59,8 +59,6 @@ private[spark] abstract class WebUI(
   def getTabs: Seq[WebUITab] = tabs
   def getHandlers: Seq[ServletContextHandler] = handlers
   def getSecurityManager: SecurityManager = securityManager
-  def handlersForPage(page: WebUIPage): Seq[ServletContextHandler] =
-    pageToHandlers.getOrElse(page, Seq.empty)
 
   /** Attach a tab to this UI, along with all of its attached pages. */
   def attachTab(tab: WebUITab) {

sql/hive-thriftserver/src/main/scala/org/apache/spark/sql/hive/thriftserver/ui/ThriftServerTab.scala

@@ -21,7 +21,7 @@ import org.apache.spark.{SparkContext, SparkException}
 import org.apache.spark.internal.Logging
 import org.apache.spark.sql.hive.thriftserver.HiveThriftServer2
 import org.apache.spark.sql.hive.thriftserver.ui.ThriftServerTab._
-import org.apache.spark.ui.{JettyUtils, SparkUI, SparkUITab}
+import org.apache.spark.ui.{SparkUI, SparkUITab}
 
 /**
  * Spark Web UI tab that shows statistics of jobs running in the thrift server.