fix(retrieval): remove max_iter in retrieval.py to avoid empty data

ppcls/engine/evaluation/retrieval.py

@@ -146,11 +146,7 @@ def cal_feature(engine, name='gallery'):
     batch_feas_list = []
     img_id_list = []
     unique_id_list = []
-    max_iter = len(dataloader) - 1 if platform.system() == "Windows" else len(
-        dataloader)
     for idx, batch in enumerate(dataloader):  # load is very time-consuming
-        if idx >= max_iter:
-            break
         if idx % engine.config["Global"]["print_batch_step"] == 0:
             logger.info(
                 f"{name} feature calculation process: [{idx}/{len(dataloader)}]"