Actually replace trailing ) characters with ''

ipa_server/ipaldap.py

@@ -538,7 +538,7 @@ def notfound(args):
             # Python re doesn't do paren counting so the string could
             # have a trailing paren "foo)"
             target = re.match(r'\(.*=(.*)\)', searchfilter).group(1)
-            target.replace(")","")
+            target = target.replace(")","")
         except:
             target = searchfilter
         return "%s not found" % str(target)