Added max_sample_ arguments (#10551)

* reverted changes of logging and saving metrics

* added max_sample arguments

* fixed code

* white space diff

* reformetting code

* reformatted code

examples/seq2seq/run_seq2seq.py

@@ -601,7 +601,6 @@ def main():
         trainer.save_state()
 
     # Evaluation
-    results = {}
     if training_args.do_eval:
         logger.info("*** Evaluate ***")
 
@@ -614,6 +613,7 @@ def main():
         trainer.log_metrics("eval", metrics)
         trainer.save_metrics("eval", metrics)
 
+    # predict
     if training_args.do_predict:
         logger.info("*** Test ***")
 
@@ -640,8 +640,6 @@ def main():
                 with open(output_test_preds_file, "w") as writer:
                     writer.write("\n".join(test_preds))
 
-    return results
-
 
 def _mp_fn(index):
     # For xla_spawn (TPUs)