[SPARK-22837][SQL] Session timeout checker does not work in SessionManager.

## What changes were proposed in this pull request?

Currently we do not call the `super.init(hiveConf)` in `SparkSQLSessionManager.init`. So we do not load the config `HIVE_SERVER2_SESSION_CHECK_INTERVAL HIVE_SERVER2_IDLE_SESSION_TIMEOUT HIVE_SERVER2_IDLE_SESSION_CHECK_OPERATION` , which cause the session timeout checker does not work.

## How was this patch tested?

manual tests

Author: zuotingbing <[email protected]>

Closes #20025 from zuotingbing/SPARK-22837.

Author: zuotingbing

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

@@ -40,22 +40,8 @@ private[hive] class SparkSQLSessionManager(hiveServer: HiveServer2, sqlContext:
   private lazy val sparkSqlOperationManager = new SparkSQLOperationManager()
 
   override def init(hiveConf: HiveConf) {
-    setSuperField(this, "hiveConf", hiveConf)
-
-    // Create operation log root directory, if operation logging is enabled
-    if (hiveConf.getBoolVar(ConfVars.HIVE_SERVER2_LOGGING_OPERATION_ENABLED)) {
-      invoke(classOf[SessionManager], this, "initOperationLogRootDir")
-    }
-
-    val backgroundPoolSize = hiveConf.getIntVar(ConfVars.HIVE_SERVER2_ASYNC_EXEC_THREADS)
-    setSuperField(this, "backgroundOperationPool", Executors.newFixedThreadPool(backgroundPoolSize))
-    getAncestorField[Log](this, 3, "LOG").info(
-      s"HiveServer2: Async execution pool size $backgroundPoolSize")
-
     setSuperField(this, "operationManager", sparkSqlOperationManager)
-    addService(sparkSqlOperationManager)
-
-    initCompositeService(hiveConf)
+    super.init(hiveConf)
   }
 
   override def openSession(