Fix scala test.

Author: rxin

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

@@ -795,21 +795,19 @@ class SQLQuerySuite extends QueryTest with BeforeAndAfterAll {
 
   test("throw errors for non-aggregate attributes with aggregation") {
     def checkAggregation(query: String, isInvalidQuery: Boolean = true) {
-      val logicalPlan = sql(query).queryExecution.logical
-
       if (isInvalidQuery) {
         val e = intercept[TreeNodeException[LogicalPlan]](sql(query).queryExecution.analyzed)
         assert(
           e.getMessage.startsWith("Expression not in GROUP BY"),
-          "Non-aggregate attribute(s) not detected\n" + logicalPlan)
+          "Non-aggregate attribute(s) not detected\n")
       } else {
         // Should not throw
         sql(query).queryExecution.analyzed
       }
     }
 
     checkAggregation("SELECT key, COUNT(*) FROM testData")
-    checkAggregation("SELECT COUNT(key), COUNT(*) FROM testData", false)
+    checkAggregation("SELECT COUNT(key), COUNT(*) FROM testData", isInvalidQuery = false)
 
     checkAggregation("SELECT value, COUNT(*) FROM testData GROUP BY key")
     checkAggregation("SELECT COUNT(value), SUM(key) FROM testData GROUP BY key", false)