[HOTFIX][SQL] Remove sleep on reset() failure.

Author: Michael Armbrust <michael@databricks.com>

Closes #2934 from marmbrus/patch-2 and squashes the following commits:

a96dab2 [Michael Armbrust] Remove sleep on reset() failure.

sql/hive/src/main/scala/org/apache/spark/sql/hive/TestHive.scala

@@ -438,10 +438,6 @@ class TestHiveContext(sc: SparkContext) extends HiveContext(sc) {
     } catch {
       case e: Exception =>
         logError("FATAL ERROR: Failed to reset TestDB state.", e)
-        // At this point there is really no reason to continue, but the test framework traps exits.
-        // So instead we just pause forever so that at least the developer can see where things
-        // started to go wrong.
-        Thread.sleep(100000)
     }
   }
 }