fix import

Author: cloud-fan

sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/continuous/ContinuousTextSocketSource.scala

@@ -37,9 +37,9 @@ import org.apache.spark.sql.catalyst.InternalRow
 import org.apache.spark.sql.execution.streaming.{ContinuousRecordEndpoint, ContinuousRecordPartitionOffset, GetRecord}
 import org.apache.spark.sql.execution.streaming.sources.TextSocketReader
 import org.apache.spark.sql.sources.v2.DataSourceOptions
-import org.apache.spark.sql.sources.v2.reader.{InputPartition, InputPartitionReader, SupportsDeprecatedScanRow}
+import org.apache.spark.sql.sources.v2.reader.{InputPartition, InputPartitionReader}
 import org.apache.spark.sql.sources.v2.reader.streaming.{ContinuousInputPartitionReader, ContinuousReader, Offset, PartitionOffset}
-import org.apache.spark.sql.types.{StringType, StructField, StructType, TimestampType}
+import org.apache.spark.sql.types.StructType
 import org.apache.spark.util.RpcUtils