test: remove unused imported(F401)

ferstar · ferstar · commit d3fdddf00d00 · 2022-09-14T12:45:27.000+08:00
diff --git a/filetype/utils.py b/filetype/utils.py
@@ -1,6 +1,5 @@
 # -*- coding: utf-8 -*-
 
-from io import BufferedIOBase
 # Python 2.7 workaround
 try:
     import pathlib
