delete save_inference_mode fun, because the dev paddle has support export crnn model

tools/program.py

@@ -333,22 +333,6 @@ def eval(model, valid_dataloader, post_process_class, eval_class):
     return metirc
 
 
-def save_inference_mode(model, config, logger):
-    if dist.get_rank() == 0:
-        model.eval()
-        print('infer')
-        save_path = '{}/infer/{}'.format(config['Global']['save_model_dir'],
-                                         config['Architecture']['model_type'])
-        if config['Architecture']['model_type'] == 'rec':
-            input_shape = [None, 3, 32, None]
-            jit_model = paddle.jit.to_static(
-                model, input_spec=[paddle.static.InputSpec(input_shape)])
-            paddle.jit.save(jit_model, save_path)
-            logger.info('inference model save to {}'.format(save_path))
-
-        model.train()
-
-
 def preprocess():
     FLAGS = ArgsParser().parse_args()
     config = load_config(FLAGS.config)

tools/train.py

@@ -89,7 +89,6 @@ def main(config, device, logger, vdl_writer):
     program.train(config, train_dataloader, valid_dataloader, device, model,
                   loss_class, optimizer, lr_scheduler, post_process_class,
                   eval_class, pre_best_model_dict, logger, vdl_writer)
-    program.save_inference_mode(model, config, logger)
 
 
 def test_reader(config, device, logger):