fix test data path

fluid/PaddleCV/image_classification/README.md

@@ -168,7 +168,6 @@ Inference is used to get prediction score or image features based on trained mod
 ```
 python infer.py \
        --model=SE_ResNeXt50_32x4d \
-       --batch_size=32 \
        --class_dim=1000 \
        --image_shape=3,224,224 \
        --with_mem_opt=True \

fluid/PaddleCV/image_classification/README_cn.md

@@ -164,7 +164,6 @@ Testbatch 80,loss 0.0969972759485, acc1 1.0,acc5 1.0,time 0.41 sec
 ```
 python infer.py \
        --model=SE_ResNeXt50_32x4d \
-       --batch_size=32 \
        --class_dim=1000 \
        --image_shape=3,224,224 \
        --with_mem_opt=True \

fluid/PaddleCV/image_classification/reader.py

@@ -156,11 +156,13 @@ def _reader_creator(file_list,
             for line in lines:
                 if mode == 'train' or mode == 'val':
                     img_path, label = line.split()
-                    img_path = img_path.replace("JPEG", "jpeg")
+                    #img_path = img_path.replace("JPEG", "jpeg")
                     img_path = os.path.join(data_dir, img_path)
                     yield img_path, int(label)
                 elif mode == 'test':
-                    img_path = os.path.join(data_dir, line)
+                    img_path, label = line.split()
+                    #img_path = img_path.replace("JPEG", "jpeg")
+                    img_path = os.path.join(data_dir, img_path)
                     yield [img_path]
 
     mapper = functools.partial(