remove dead code

IPython/terminal/interactiveshell.py

@@ -342,26 +342,7 b' class TerminalInteractiveShell(InteractiveShell):'
             return
 
         import win_unicode_console
-
-        if PY3:
-            win_unicode_console.enable()
-        else:
-            # https://github.com/ipython/ipython/issues/9768
-            from win_unicode_console.streams import (TextStreamWrapper,
-                                 stdout_text_transcoded, stderr_text_transcoded)
-
-            class LenientStrStreamWrapper(TextStreamWrapper):
-                def write(self, s):
-                    if isinstance(s, bytes):
-                        s = s.decode(self.encoding, 'replace')
-
-                    self.base.write(s)
-
-            stdout_text_str = LenientStrStreamWrapper(stdout_text_transcoded)
-            stderr_text_str = LenientStrStreamWrapper(stderr_text_transcoded)
-
-            win_unicode_console.enable(stdout=stdout_text_str,
-                                       stderr=stderr_text_str)
+        win_unicode_console.enable()
 
     def init_io(self):
         if sys.platform not in {'win32', 'cli'}: