Implement PEP 393.
diff --git a/Lib/json/decoder.py b/Lib/json/decoder.py
index 3174e31..e7c0539 100644
--- a/Lib/json/decoder.py
+++ b/Lib/json/decoder.py
@@ -121,8 +121,7 @@
msg = "Invalid \\uXXXX escape"
raise ValueError(errmsg(msg, s, end))
uni = int(esc, 16)
- # Check for surrogate pair on UCS-4 systems
- if 0xd800 <= uni <= 0xdbff and sys.maxunicode > 65535:
+ if 0xd800 <= uni <= 0xdbff:
msg = "Invalid \\uXXXX\\uXXXX surrogate pair"
if not s[end + 5:end + 7] == '\\u':
raise ValueError(errmsg(msg, s, end))