knowledge_pad: fix a unused variable

bt5/erp5_knowledge_pad/ExtensionTemplateItem/portal_components/extension.erp5.GetRssDataAsDict.py

@@ -3,7 +3,6 @@ from hashlib import md5
 
 def getRssDataAsDict(context, url, username=None, password=None):
   result = {}
-  translate = context.Base_translateString
   # no url, no feed to read
   if url in ('', None, 'None',):
     # no URL

bt5/erp5_knowledge_pad/ExtensionTemplateItem/portal_components/extension.erp5.GetRssDataAsDict.xml

@@ -45,9 +45,7 @@
         <item>
             <key> <string>text_content_warning_message</string> </key>
             <value>
-              <tuple>
-                <string>W:  6,  2: local variable \'translate\' is assigned to but never used</string>
-              </tuple>
+              <tuple/>
             </value>
         </item>
         <item>