remove explicit default

Carreau · Carreau · commit 41b8f2f0aa24 · 2015-06-03T16:23:43.000-07:00
closes #8449
diff --git a/IPython/core/magics/pylab.py b/IPython/core/magics/pylab.py
@@ -42,7 +42,7 @@ class PylabMagics(Magics):
     @skip_doctest
     @line_magic
     @magic_arguments.magic_arguments()
-    @magic_arguments.argument('-l', '--list', default=False, action='store_true',
+    @magic_arguments.argument('-l', '--list', action='store_true',
                               help='Show available matplotlib backends')
     @magic_gui_arg
     def matplotlib(self, line=''):
