[SPARK-21831][TEST] Remove spark.sql.hive.convertMetastoreOrc config in HiveCompatibilitySuite

[dongjoon-hyun]

What changes were proposed in this pull request?

SPARK-19025 removes SQLBuilder, so we don't need the following in HiveCompatibilitySuite.

// Ensures that the plans generation use metastore relation and not OrcRelation
// Was done because SqlBuilder does not work with plans having logical relation
TestHive.setConf(HiveUtils.CONVERT_METASTORE_ORC, false)

How was this patch tested?

Pass the existing Jenkins tests.

[dongjoon-hyun]

I set this to show HiveCompatibilitySuite pass with true, too.
After Jenkins passes, I will revert this line. This PR is a test-only fix intentially.

[dongjoon-hyun]

HiveCompatibilitySuite passed in Test build #81098, but HiveDDLSuite seems not to be tested with that option before. It should be handled in a different PR because it will be a bug.

[SparkQA]

Test build #81098 has finished for PR 19043 at commit 2a72f7e.

• This patch fails Spark unit tests.
• This patch merges cleanly.
• This patch adds no public classes.

[SparkQA]

Test build #81099 has finished for PR 19043 at commit 10fd9ab.

• This patch passes all tests.
• This patch merges cleanly.
• This patch adds no public classes.

[dongjoon-hyun]

Hi, @gatorsmile .
Could you review this PR?

[gatorsmile]

LGTM

[dongjoon-hyun]

Thank you for reviewing and merging!