fix import

Author: cloud-fan

sql/core/src/test/scala/org/apache/spark/sql/execution/streaming/sources/RateStreamProviderSuite.scala

@@ -23,8 +23,8 @@ import java.util.concurrent.TimeUnit
 import scala.collection.JavaConverters._
 import scala.collection.mutable.ArrayBuffer
 
-import org.apache.spark.sql.Row
 import org.apache.spark.sql.AnalysisException
+import org.apache.spark.sql.Row
 import org.apache.spark.sql.catalyst.InternalRow
 import org.apache.spark.sql.execution.datasources.DataSource
 import org.apache.spark.sql.execution.streaming._