Cleaned short_string utility function

misago/utils/strings.py

@@ -19,9 +19,6 @@ def random_string(length):
 def short_string(string, length=16):
     if len(string) <= length:
         return string;
-
-    short = []
-    length = length - 3
     string = string[0:length]
     bits = string.split()
     if len(bits[-1]) > length: