diff --git a/sphinx/util/pycompat.py b/sphinx/util/pycompat.py
index 69a4351bf..e9dec7736 100644
--- a/sphinx/util/pycompat.py
+++ b/sphinx/util/pycompat.py
@@ -135,10 +135,6 @@ def execfile_(filepath, _globals, open=open):
     with open(filepath, mode) as f:
         source = f.read()
 
-    # py26 accept only LF eol instead of CRLF
-    if sys.version_info[:2] == (2, 6):
-        source = source.replace(b'\r\n', b'\n')
-
     # compile to a code object, handle syntax errors
     filepath_enc = filepath.encode(fs_encoding)
     try: