removed os import and filsize from test_wav

picard/ui/infodialog.py

@@ -33,7 +33,6 @@ from collections import (
     namedtuple,
 )
 from html import escape
-import os.path
 import re
 import traceback
 

test/formats/test_wav.py

@@ -41,7 +41,6 @@ expected_info = {
     '~channels': '2',
     '~sample_rate': '44100',
     '~bits_per_sample': '16',
-    '~filesize': '15706',
 }
 
 if WAVFile.supports_tag('artist'):