Don't explicitly set "hive.auto.convert.join.noconditionaltask.size"

Don't explicitly set "hive.auto.convert.join.noconditionaltask.size", user to appropriately to cluster.

sample-queries-tpcds/testbench.settings

@@ -52,6 +52,7 @@ set hive.vectorized.groupby.maxentries=1024;
 -- These values need to be tuned appropriately to your cluster. These examples are for reference.
 -- set hive.tez.container.size=4096;
 -- set hive.tez.java.opts=-Xmx3800m;
+-- set hive.auto.convert.join.noconditionaltask.size=320000000;
 
 set hive.execution.engine=tez;
 set hive.default.fileformat=orc;
@@ -59,7 +60,6 @@ set hive.cbo.enable=true;
 set hive.stats.fetch.column.stats=true;
 set hive.exec.dynamic.partition.mode=nonstrict;
 set hive.tez.auto.reducer.parallelism=true;
-set hive.auto.convert.join.noconditionaltask.size=320000000;
 set hive.exec.reducers.bytes.per.reducer=100000000;
 set hive.txn.manager=org.apache.hadoop.hive.ql.lockmgr.DummyTxnManager;
 set hive.support.concurrency=false;