converting value to string make not possible to use list

In some cases, we may want to use lists (like in parallel list fields), so it's
not good to always value to string. If a conversion (with '\n' addition and
'\r' replacement) is needed, this should be done in the render_od* method

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@31525 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5OOo/FormPrintout.py

@@ -1030,13 +1030,8 @@ class ODGStrategy(ODFStrategy):
       text_xpath = '//draw:frame[@draw:name="%s"]' % field.id
       node_list = element_tree.xpath(text_xpath, namespaces=element_tree.nsmap)
       value = field.get_value('default')
-      if isinstance(value, (str, unicode)):
       if isinstance(value, str):
         value = value.decode('utf-8')
-        value = [value]
-      if isinstance(value, (list, tuple)):
-        value = '\n'.join(value)
-        value.replace('\r', '')
       for target_node in node_list:
         # render the field in odg xml node format
         attr_dict = {}