misc: remove unnecessary encoding (#44545)

passerelle_montpellier_encombrants/ods.py

@@ -96,8 +96,6 @@ class WorkCell(object):
     def __init__(self, worksheet, value, hint=None):
         if value is None:
             value = ''
-        if type(value) is not unicode:
-            value = unicode(value, 'utf-8')
         self.value = value
         self.worksheet = worksheet
         self.hint = hint