remove commented code.

Author: jiangxb1987

sql/core/src/test/scala/org/apache/spark/sql/SQLQuerySuite.scala

@@ -2700,23 +2700,6 @@ class SQLQuerySuite extends QueryTest with SharedSQLContext {
           |ON (((t2.a) = (t1.a)) AND ((t2.a) = (t1.int_col))) AND ((t2.a) = (t1.b))
         """.stripMargin).count() > 0
       )
-
-    //sql("CREATE TEMPORARY VIEW foo(a) AS VALUES (CAST(-993 AS BIGINT))")
-
-    /*sql(
-      """
-        |SELECT
-        |*
-        |FROM (
-        |    SELECT
-        |    COALESCE(t1.a, t2.a) AS int_col,
-        |    t1.a,
-        |    t2.a AS b
-        |    FROM foo t1
-        |    CROSS JOIN foo t2
-        |) t1
-        |INNER JOIN foo t2 ON (((t2.a) = (t1.a)) AND ((t2.a) = (t1.int_col))) AND ((t2.a) = (t1.b))
-      """.stripMargin).collect()*/
     }
   }
 }