Fix infer of ocr. (#2290)

PaddleCV/ocr_recognition/attention_model.py

@@ -11,7 +11,7 @@ sos = 0
 eos = 1
 gradient_clip = 10
 LR = 1.0
-beam_size = 2
+beam_size = 1
 learning_rate_decay = None
 
 

PaddleCV/ocr_recognition/infer.py

 from __future__ import print_function
 import paddle.fluid as fluid
-from utility import add_arguments, print_arguments, to_lodtensor, get_ctc_feeder_data, get_attention_feeder_for_infer
+from utility import add_arguments, print_arguments, to_lodtensor, get_ctc_feeder_data, get_attention_feeder_for_infer, get_ctc_feeder_for_infer
 import paddle.fluid.profiler as profiler
 from crnn_ctc_model import ctc_infer
 from attention_model import attention_infer