diff --git a/IPython/terminal/interactiveshell.py b/IPython/terminal/interactiveshell.py
index 4f72ee5..f1e309e 100644
--- a/IPython/terminal/interactiveshell.py
+++ b/IPython/terminal/interactiveshell.py
@@ -572,12 +572,6 @@ class TerminalInteractiveShell(InteractiveShell):
         prompt : str, optional
           A string to be printed to prompt the user.
         """
-        # Code run by the user may have modified the readline completer state.
-        # We must ensure that our completer is back in place.
-
-        if self.has_readline:
-            self.set_readline_completer()
-        
         # raw_input expects str, but we pass it unicode sometimes
         prompt = py3compat.cast_bytes_py2(prompt)