[gnome-builder] Remove Meson addition

[Christian Hergert <chergert src gnome org>]

commit 6f3fac7d4d8b30507a63304c344b4b3bfe4c222a
Author: Corentin Noël <corentin noel collabora com>
Date:   Tue Mar 26 11:33:20 2019 +0100

    Remove Meson addition

 build-aux/flatpak/org.gnome.Builder.json | 13 -------------
 1 file changed, 13 deletions(-)
---
diff --git a/build-aux/flatpak/org.gnome.Builder.json b/build-aux/flatpak/org.gnome.Builder.json
index 9adf15806..363c926b8 100644
--- a/build-aux/flatpak/org.gnome.Builder.json
+++ b/build-aux/flatpak/org.gnome.Builder.json
@@ -77,19 +77,6 @@
         "*.a"
     ],
     "modules" : [
-        {
-            "name" : "meson",
-            "buildsystem" : "simple",
-            "build-commands": [
-                "python3 setup.py install --prefix=${FLATPAK_DEST}"
-            ],
-            "sources" : [
-                {
-                    "type" : "git",
-                    "url" : "https://github.com/mesonbuild/meson.git";
-                }
-            ]
-        },
         "python-deps.json",
         {
             "name" : "gperftools",