Delete unused import

Author: wannaphong

pythainlp/util/normalize.py

@@ -4,7 +4,6 @@
 """
 import re
 from typing import List, Union
-import warnings
 
 from pythainlp import thai_above_vowels as above_v
 from pythainlp import thai_below_vowels as below_v

pythainlp/util/time.py

@@ -4,7 +4,6 @@
 
 Convert time string or time object to Thai words.
 """
-import warnings
 from datetime import datetime, time
 from typing import Union
 

pythainlp/wangchanberta/postag.py

@@ -4,7 +4,6 @@
 import warnings
 from transformers import (
     CamembertTokenizer,
-    AutoTokenizer,
     pipeline,
 )