remove to_ascii

this is a no-op on python 3.

1 files changed, 1 insertions, 19 deletions

diff --git a/synapse/util/stringutils.py b/synapse/util/stringutils.py

index 2cfa5cf721..81a44184ca 100644
--- a/synapse/util/stringutils.py
+++ b/synapse/util/stringutils.py
@@ -19,8 +19,7 @@ import re
 import string
 from collections import Iterable
 
-import six
-from six import PY2, PY3
+from six import PY3
 from six.moves import range
 
 from synapse.api.errors import Codes, SynapseError
@@ -68,23 +67,6 @@ def is_ascii(s):
         return True
 
 
-def to_ascii(s):
-    """Converts a string to ascii if it is ascii, otherwise leave it alone.
-
-    If given None then will return None.
-    """
-    if PY3:
-        return s
-
-    if s is None:
-        return None
-
-    try:
-        return s.encode("ascii")
-    except UnicodeEncodeError:
-        return s
-
-
 def assert_valid_client_secret(client_secret):
     """Validate that a given string matches the client_secret regex defined by the spec"""
     if client_secret_regex.match(client_secret) is None: