clean up code

Yancey0623 · Yancey0623 · commit d599a66f49b5 · 2018-05-31T12:21:13.000+08:00
diff --git a/python/paddle/fluid/recordio_writer.py b/python/paddle/fluid/recordio_writer.py
@@ -14,7 +14,6 @@
 
 import core
 import contextlib
-from ..batch import batch
 __all__ = ['convert_reader_to_recordio_file']
 
 
@@ -48,9 +47,6 @@ def convert_reader_to_recordio_file(
     return counter
 
 
-import paddle
-
-
 def convert_reader_to_recordio_files(
         filename_suffix,
         batch_per_file,
