Removed polyglots unicode_type usage

ebook_converter/utils/fonts/metadata.py

@@ -3,7 +3,6 @@ from struct import calcsize, unpack, unpack_from
 from collections import namedtuple
 
 from ebook_converter.utils.fonts.utils import get_font_names2, get_font_characteristics
-from ebook_converter.polyglot.builtins import unicode_type
 
 
 __license__ = 'GPL v3'
@@ -45,7 +44,7 @@ class FontMetadata(object):
         elif wt == 700:
             wt = 'bold'
         else:
-            wt = unicode_type(wt)
+            wt = str(wt)
         self.font_weight = wt
 
         self.font_stretch = ('ultra-condensed', 'extra-condensed',