fix style

python/paddle/v2/reader/creator.py

@@ -16,7 +16,6 @@ Creator package contains some simple reader creator, which could be used in user
 program.
 """
 
-
 __all__ = ['np_array', 'text_file', "recordio"]
 
 
@@ -76,4 +75,4 @@ def recordio(path):
             yield r
         f.close()
 
-    return reader
\ No newline at end of file
+    return reader