Revert "Don't get page with 0 comment"

This reverts commit 4a5456b152.

This commit was here to bypass a bug of dlfp rss Atom.
The bug is fixed and the commit can be reverted.
Reference : http://linuxfr.org/suivi/855

modules/dlfp/browser.py

@@ -133,10 +133,8 @@ class DLFP(BaseBrowser):
 
     def get_hash(self, url):
         self.location(url)
-        if self.page.document.xpath('//entry'):
-            return hashlib.md5(lxml.etree.tostring(self.page.document)).hexdigest()
-        else:
-            return None
+        myhash = hashlib.md5(lxml.etree.tostring(self.page.document)).hexdigest()
+        return myhash
 
     def get_content(self, _id):
         url, _id = self.parse_id(_id)