Remove references to DES as this is no longer included in qtbase

Change-Id: I9a9d1836e29d1cf3b41b14a6f7a249c4e8942ad1
Reviewed-by: Richard J. Moore <rich@kde.org>

doc/src/legal/3rdparty.qdoc

@@ -2147,13 +2147,6 @@
     along with this library; see the file COPYING.LIB. If not, write to the Free
     Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 
-    \hr
-    \section1 DES (des.cpp)
-
-    Implementation of DES encryption for NTLM
-    Copyright 1997-2005 Simon Tatham.
-    This software is released under the MIT license.
-
     \hr
     \section1 Bison Parser 2.3a
 

doc/src/legal/licenses.qdoc

@@ -93,8 +93,6 @@
          \li Specific parts of the Qt for OS X Cocoa port. \li BSD-style \li \l{Qt for OS X}
     \row \li \l{The qtmain Library}{qtmain library}
          \li A helper library for writing a cross-platform main() function on Windows. \li Modified BSD \li \l{Qt for Windows}
-    \row \li \l{DES (des.cpp)}{DES}
-         \li Implementation of DES encryption (des.cpp). \li MIT \li
     \row \li \l{Shift-JIS Text Codec}
          \li A character encoding for Japanese. \li BSD-style\li
     \row \li \l{ISO-2022-JP (JIS) Text Codec}
@@ -1168,15 +1166,6 @@
     \li The PCRE library in \c{qtbase/src/3rdparty/pcre}
     \endlist
 
-    \section1 DES (\c des.cpp)
-
-    \e{Implementation of DES encryption for NTLM}\br
-    \e{Copyright 1997-2005 Simon Tatham.}\br
-    \e{This software is released under the MIT license.}
-
-    See \c qtbase/src/3rdparty/des/des.cpp for more information about the terms and
-    conditions under which the code is supplied.
-
     \hr
     \b Licenses that apply to tests.
     \hr