Remove the "panel" module doc file which has been ignored since 1994.

Doc/lib/lib.tex

@@ -437,7 +437,6 @@ and how to embed it in other applications.
 \input{libgl}
 \input{libimgfile}
 \input{libjpeg}
-%\input{libpanel}
 
 \input{libsun}                  % SUNOS ONLY
 \input{libsunaudio}

Doc/lib/libpanel.tex

@@ -1,74 +0,0 @@
-\section{\module{panel} ---
-         None}
-\declaremodule{standard}{panel}
-
-\modulesynopsis{None}
-
-
-\strong{Please note:} The FORMS library, to which the
-\code{fl}\refbimodindex{fl} module described above interfaces, is a
-simpler and more accessible user interface library for use with GL
-than the \code{panel} module (besides also being by a Dutch author).
-
-This module should be used instead of the built-in module
-\code{pnl}\refbimodindex{pnl}
-to interface with the
-\emph{Panel Library}.
-
-The module is too large to document here in its entirety.
-One interesting function:
-
-\begin{funcdesc}{defpanellist}{filename}
-Parses a panel description file containing S-expressions written by the
-\emph{Panel Editor}
-that accompanies the Panel Library and creates the described panels.
-It returns a list of panel objects.
-\end{funcdesc}
-
-\warning{The Python interpreter will dump core if you don't create a
-GL window before calling
-\code{panel.mkpanel()}
-or
-\code{panel.defpanellist()}.}
-
-\section{\module{panelparser} ---
-         None}
-\declaremodule{standard}{panelparser}
-
-\modulesynopsis{None}
-
-
-This module defines a self-contained parser for S-expressions as output
-by the Panel Editor (which is written in Scheme so it can't help writing
-S-expressions).
-The relevant function is
-\code{panelparser.parse_file(\var{file})}
-which has a file object (not a filename!) as argument and returns a list
-of parsed S-expressions.
-Each S-expression is converted into a Python list, with atoms converted
-to Python strings and sub-expressions (recursively) to Python lists.
-For more details, read the module file.
-% XXXXJH should be funcdesc, I think
-
-\section{\module{pnl} ---
-         None}
-\declaremodule{builtin}{pnl}
-
-\modulesynopsis{None}
-
-
-This module provides access to the
-\emph{Panel Library}
-built by NASA Ames\index{NASA} (to get it, send email to
-\code{panel-request@nas.nasa.gov}).
-All access to it should be done through the standard module
-\code{panel}\refstmodindex{panel},
-which transparently exports most functions from
-\code{pnl}
-but redefines
-\code{pnl.dopanel()}.
-
-\warning{The Python interpreter will dump core if you don't create a
-GL window before calling \code{pnl.mkpanel()}.}
-
-The module is too large to document here in its entirety.