Remove sys.version_info[0] == 2 or 3.

examples/contrib/run_swag.py

@@ -24,7 +24,6 @@ import glob
 import logging
 import os
 import random
-import sys
 
 import numpy as np
 import torch
@@ -104,12 +103,7 @@ class InputFeatures(object):
 
 def read_swag_examples(input_file, is_training=True):
     with open(input_file, "r", encoding="utf-8") as f:
-        reader = csv.reader(f)
-        lines = []
-        for line in reader:
-            if sys.version_info[0] == 2:
-                line = list(unicode(cell, "utf-8") for cell in line)  # noqa: F821
-            lines.append(line)
+        lines = list(csv.reader(f))
 
     if is_training and lines[0][-1] != "label":
         raise ValueError("For training, the input file must contain a label column.")