[MINOR] [SQL] Removes debugging println

Author: Cheng Lian <lian@databricks.com>

Closes #6123 from liancheng/remove-println and squashes the following commits:

03356b6 [Cheng Lian] Removes debugging println

sql/hive/src/test/scala/org/apache/spark/sql/sources/FSBasedRelationSuite.scala

@@ -509,8 +509,6 @@ class FSBasedRelationSuite extends QueryTest with ParquetTest {
         path.makeQualified(fs.getUri, fs.getWorkingDirectory).toString
       }
 
-      println(df.queryExecution)
-
       val actualPaths = df.queryExecution.analyzed.collectFirst {
         case LogicalRelation(relation: FSBasedRelation) =>
           relation.paths.toSet