Remove code commented for more than 10 years (GH-16965)

Remove code commented for more than 10 years (GH-16965)

test_urllib commented since 2007:

commit d9880d07fc032884e8bd5cf3ac636d3a3778d5f7
Author: Facundo Batista <facundobatista@gmail.com>
Date:   Fri May 25 04:20:22 2007 +0000

    Commenting out the tests until find out who can test them in
    one of the problematic enviroments.

pynche code commented since 1998 and 2001:

commit ef30092207e684bd3e74fe3d6172b97327a0a089
Author: Barry Warsaw <barry@python.org>
Date:   Tue Dec 15 01:04:38 1998 +0000

    Added most of the mechanism to change the strips from color variations
    to color constants (i.e. red constant, green constant, blue
    constant).  But I haven't hooked this up yet because the UI gets more
    crowded and the arrows don't reflect the correct values.

    Added "Go to Black" and "Go to White" buttons.

commit 741eae0b3129c123ed4319d8d9e5b877b09aefa8
Author: Barry Warsaw <barry@python.org>
Date:   Wed Apr 18 03:51:55 2001 +0000

    StripWidget.__init__(), update_yourself(): Removed some unused local
    variables reported by PyChecker.

    __togglegentype(): PyChecker accurately reported that the variable
    __gentypevar was unused -- actually this whole method is currently
    unused so comment it out.