[gnome-todo] flatpak: Use libadwaita from the GNOME platform

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 429892a016ccc56a07a8c1d1bd3642defca90425
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Mon Oct 4 17:33:01 2021 -0300

    flatpak: Use libadwaita from the GNOME platform

 build-aux/flatpak/org.gnome.Todo.json | 38 -----------------------------------
 1 file changed, 38 deletions(-)
---
diff --git a/build-aux/flatpak/org.gnome.Todo.json b/build-aux/flatpak/org.gnome.Todo.json
index bf3751fb..29272d80 100644
--- a/build-aux/flatpak/org.gnome.Todo.json
+++ b/build-aux/flatpak/org.gnome.Todo.json
@@ -151,44 +151,6 @@
                 }
             ]
         },
-        {
-            "name" : "libsass",
-            "buildsystem" : "meson",
-            "sources" : [
-                {
-                    "type" : "git",
-                    "url" : "https://github.com/lazka/libsass.git";,
-                    "branch" : "meson"
-                }
-            ]
-        },
-        {
-            "name" : "sassc",
-            "buildsystem" : "meson",
-            "sources" : [
-                {
-                    "type" : "git",
-                    "url" : "https://github.com/lazka/sassc.git";,
-                    "branch" : "meson"
-                }
-            ]
-        },
-        {
-            "name" : "libadwaita",
-            "buildsystem" : "meson",
-            "config-opts" : [
-                "-Dexamples=false",
-                "-Dtests=false",
-                "-Dvapi=false"
-            ],
-            "sources" : [
-                {
-                    "type" : "git",
-                    "url" : "https://gitlab.gnome.org/GNOME/libadwaita.git";,
-                    "branch": "main"
-                }
-            ]
-        },
         {
             "name" : "gnome-todo",
             "buildsystem" : "meson",