remove org.apache.spark.sql.hive.HiveSharedState class check

[lichenglin]

What is this PR for?

remove org.apache.spark.sql.hive.HiveSharedState class check
because it has been removed since spark 2.1.x

What type of PR is it?

[Bug Fix ]

What is the Jira issue?

ZEPPELIN-1909

[felixcheung]

looks good, why doesn't CI tests for Spark 2.1 fails for this?

[felixcheung]

would be great to understand why it worked before, but might merge this fix first.
merging if no more comment

[lichenglin]

I don't know either，It fails with spark 1.6.1.
May be the class check is still needed by 1.6,1?I'm not sure.
How can I trigger the build once more on travis-cli?

[felixcheung]

I don't think we need to check for all 3 classes, so I believe this fix is good.
what I don't understand is why it is failing for you but running just fine in travis CI where we have tests for Spark 2.1 - which is why I'm asking.

to trigger test, close this PR and reopen it.

[lichenglin]

e...
It works on my local mac with spark 2.1.0.
And pass the build with 2.1.0.
I seems that the build fails with
{code}
"env": "PYTHON="2" SCALA_VER="2.10" SPARK_VER="1.6.1" HADOOP_VER="2.6" PROFILE="-Pspark-1.6 -Phadoop-2.6 -Ppyspark" BUILD_FLAG="package -pl spark,python -am -DskipTests -DskipRat" TEST_FLAG="verify -DskipRat" TEST_PROJECTS="-pl zeppelin-interpreter,zeppelin-display,spark-dependencies,spark,python -Dtest=org.apache.zeppelin.spark.PySparkTest,org.apache.zeppelin.python. -Dpyspark.test.exclude='' -DfailIfNoTests=false"",
{code}

I think we'd better reopen the PR and build once more.
Maybe the class check is still necessary for spark 1.6.1

[felixcheung]

it's only the python2 + spark 1.6 profile. It ran fine with the other spark 1.6 profile so I think we are good.