[gnome-builder] build: keep /app/libexec/flatpak-bwrap

[Christian Hergert <chergert src gnome org>]

commit 4b0c59f97baeefd12b5629ac106b95ab2d7885da
Author: Christian Hergert <chergert redhat com>
Date:   Mon Sep 27 19:02:26 2021 -0700

    build: keep /app/libexec/flatpak-bwrap
    
    We need this for some extra-data to be applied. If it works though, is yet
    to be seen.

 build-aux/flatpak/org.gnome.Builder.json | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/build-aux/flatpak/org.gnome.Builder.json b/build-aux/flatpak/org.gnome.Builder.json
index d7fd80aa4..bd364a915 100644
--- a/build-aux/flatpak/org.gnome.Builder.json
+++ b/build-aux/flatpak/org.gnome.Builder.json
@@ -453,7 +453,6 @@
                 "/bin/flatpak-bisect",
                 "/bin/flatpak-coredumpctl",
                 "/etc/profile.d",
-                "/libexec",
                 "/lib/systemd",
                 "/share/dbus-1/interfaces/org.freedesktop.*",
                 "/share/dbus-1/services/org.freedesktop.*",