[gnome-builder] flatpak: remove extra newline

[Christian Hergert <chergert src gnome org>]

commit eb2edc702655d30c1e4a9b6d04de102d71b1c205
Author: Christian Hergert <chergert redhat com>
Date:   Wed Nov 17 00:28:21 2021 -0800

    flatpak: remove extra newline

 src/plugins/flatpak/daemon/test-install.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/plugins/flatpak/daemon/test-install.c b/src/plugins/flatpak/daemon/test-install.c
index 3fa0d6981..7cf9aecaf 100644
--- a/src/plugins/flatpak/daemon/test-install.c
+++ b/src/plugins/flatpak/daemon/test-install.c
@@ -134,7 +134,7 @@ main (gint argc,
   g_assert_no_error (error);
   g_assert_true (ret);
 
-  g_message ("Installing %s\n", argv[1]);
+  g_message ("Installing %s", argv[1]);
   ipc_flatpak_service_call_install (service,
                                     (const char * const *)all->pdata,
                                     transfer_path,