Remove Tools/scripts/pydocgui.pyw.

pydoc.gui was removed over 3 years ago (#10818), this script has been
utterly bereft of worth since then.

Tools/scripts/pydocgui.pyw

-# Note:  this file must not be named pydoc.pyw, lest it just end up
-# importing itself (Python began allowing import of .pyw files
-# between 2.2a1 and 2.2a2).
-import pydoc
-
-if __name__ == '__main__':
-   pydoc.gui()