[dasher] g/c Qt Extended (Qtopia) which was discontinued over a decade ago.

[Patrick Welche <pwelche src gnome org>]

commit 4db89b780279bd49ce8ae3f8040720de9f7555c0
Author: Patrick Welche <prlw1 cam ac uk>
Date:   Wed Jun 2 12:56:57 2021 +0100

    g/c Qt Extended (Qtopia) which was discontinued over a decade ago.

 INSTALL.Linux                      |   9 --
 Src/QMain.cc                       |  18 ----
 Src/Qt/Makefile.am                 |  43 ----------
 Src/Qt/QtDasherImpl.cc             |  77 -----------------
 Src/Qt/QtDasherImpl.h              |  32 -------
 Src/Qt/QtDasherPlugin.cc           |  73 ----------------
 Src/Qt/QtDasherPlugin.h            |  41 ---------
 Src/Qt/QtDasherScreen.cc           | 172 -------------------------------------
 Src/Qt/QtDasherScreen.h            |  98 ---------------------
 Src/README_directory_structure.txt |   1 -
 10 files changed, 564 deletions(-)
---
diff --git a/INSTALL.Linux b/INSTALL.Linux
index 038d1ff38..c679f52c0 100644
--- a/INSTALL.Linux
+++ b/INSTALL.Linux
@@ -49,15 +49,6 @@ Options
                        for debugging, as accessibility is now built-in
                        and doesn't bring in more dependencies.
 
-   The following options include code which is significantly out of
-date and currently untested. It is likely that these options will not
-correctly build without modifications to the source code. If you are
-willing to invest some time in getting these up to date, please let us
-know!
-
-   --with-qte          Build binaries using the QTE environment.
-
-
 Desktop Shortcuts
 =================
 After the installation is done, for Ubuntu and derivatives
diff --git a/Src/README_directory_structure.txt b/Src/README_directory_structure.txt
index a9368d0b9..59cb7135d 100644
--- a/Src/README_directory_structure.txt
+++ b/Src/README_directory_structure.txt
@@ -2,7 +2,6 @@ DasherCore      - The Dasher Engine
 Win32           - The MS Windows GUI, coded using the Windows API (not MFC).
 Gtk2           - The Unix GUI, coded using GTK2.
 MacOSX         - The MacOS X GUI, coded using Cocoa.
-Qt             - The QTopia GUI, aimed at QT-based palmtops
 Your platform here:
 XXX             - GUI, coded for the XXX platform.