Remove some unused imports

Lib/fontTools/ufoLib/__init__.py

@@ -1,4 +1,3 @@
-import sys
 import os
 from copy import deepcopy
 from os import fsdecode

Lib/fontTools/ufoLib/glifLib.py

@@ -17,7 +17,7 @@ import fs.base
 import fs.errors
 import fs.osfs
 import fs.path
-from fontTools.misc.py23 import tobytes, tostr
+from fontTools.misc.py23 import tobytes
 from fontTools.misc import plistlib
 from fontTools.pens.pointPen import AbstractPointPen, PointToSegmentPen
 from fontTools.ufoLib.errors import GlifLibError

Lib/fontTools/ufoLib/plistlib.py

@@ -2,7 +2,7 @@
 for the old ufoLib.plistlib module, which was moved to fontTools.misc.plistlib.
 Please use the latter instead.
 """
-from fontTools.misc.plistlib import *
+from fontTools.misc.plistlib import dump, dumps, load, loads, tobytes
 
 # The following functions were part of the old py2-like ufoLib.plistlib API.
 # They are kept only for backward compatiblity.