Fix iterator when all files are done

IPI_bombyx.py

@@ -81,7 +81,6 @@ def main(args):
     done_file = open(args.done_file, 'a+')
     done_file.seek(0)
     file_list = [int(v) for v in done_file.read().split('\n') if len(v)]
-    df = df[~df.ipassage.isin(file_list)]
     overlap = False
     if not len(df):
         df = pd.read_pickle(args.input)