[gvfs] build: Remove no undefined linker flag option

[Iñigo Martínez <inigomartinez src gnome org>]

commit 4a4d1f8cc93e9b1a03c773b3e8b32411e2efb6e0
Author: Iñigo Martínez <inigomartinez gmail com>
Date:   Mon Mar 19 19:33:19 2018 +0100

    build: Remove no undefined linker flag option
    
    There is no need to set the option to enable `no-undefined` linker
    flag in the default options as it is already enabled by default.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=794365

 meson.build |    5 +----
 1 files changed, 1 insertions(+), 4 deletions(-)
---
diff --git a/meson.build b/meson.build
index 539b6cb..061db74 100644
--- a/meson.build
+++ b/meson.build
@@ -2,10 +2,7 @@ project(
   'gvfs', 'c',
   version: '1.37.1',
   license: 'LGPL2+',
-  default_options: [
-    'b_lundef=true',
-    'buildtype=debugoptimized'
-  ],
+  default_options: 'buildtype=debugoptimized',
   meson_version: '>= 0.43.0'
 )