[gtk+] Fix parse-sass.sh script

[Matthias Clasen <matthiasc src gnome org>]

commit c75793ee17d0379d671463be1c5db60f359ca292
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Sep 18 21:53:20 2014 -0400

    Fix parse-sass.sh script
    
    The script runs into this error here:
    OptionParser::NeedlessArgument: needless argument: --sourcemap=none

 gtk/resources/theme/Adwaita/parse-sass.sh |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/resources/theme/Adwaita/parse-sass.sh b/gtk/resources/theme/Adwaita/parse-sass.sh
index 333bbc5..2486480 100755
--- a/gtk/resources/theme/Adwaita/parse-sass.sh
+++ b/gtk/resources/theme/Adwaita/parse-sass.sh
@@ -1,3 +1,3 @@
 #!/usr/bin/bash
 
-sass --update --sourcemap=none .
+sass --update .