[gnome-boxes.wiki] Update source overview

[Felipe Borges <felipeborges src gnome org>]

commit 4669e36b2358330779af9ca0c9f517ca39defcd3
Author: Felipe Borges <felipeborges gnome org>
Date:   Wed Jan 19 16:07:14 2022 +0000

    Update source overview

 source-overview.md | 1 -
 1 file changed, 1 deletion(-)
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diff --git a/source-overview.md b/source-overview.md
index dc08d3a..6e33bef 100644
--- a/source-overview.md
+++ b/source-overview.md
@@ -22,6 +22,5 @@ Our code base is very similar to most of GNOME projects. Although there isn't a
 * **src/** contains the source code.
 * **subprojects/** contains the source code for libraries bundled within Boxes. These projects are developed 
separately in their own git repositories.
   * [libovf-glib](https://gitlab.gnome.org/felipeborges/libovf-glib): implements the support for `.OVA` and 
`.OVF` files.
-  * [gtk-frdp](https://gitlab.gnome.org/gnome/gtk-frdp): is a GObject wrapper around the FreeRDP API, which 
provides support for RDP connections in Boxes.
 * **tests/** contains the automated tests.
 * **vapi/** contains Boxes-specific overrides to the Vala language APIs.