[gnome-games] Remove New Window from dash menu

[Alexander Mikhaylenko <alexm src gnome org>]

commit ca4e5a08aa06112eea9510c6c6a2506215049191
Author: Yetizone <andreii lisita gmail com>
Date:   Tue Feb 12 21:34:06 2019 +0200

    Remove New Window from dash menu

 data/org.gnome.Games.desktop.in.in | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/data/org.gnome.Games.desktop.in.in b/data/org.gnome.Games.desktop.in.in
index 51633c24..d5da88b2 100644
--- a/data/org.gnome.Games.desktop.in.in
+++ b/data/org.gnome.Games.desktop.in.in
@@ -8,6 +8,7 @@ Exec=gnome-games %U
 # Translators: Do NOT translate or transliterate this text (this is an icon file name)!
 Icon=@icon@
 Terminal=false
+X-GNOME-SingleWindow=true
 Type=Application
 StartupNotify=true
 Categories=GNOME;GTK;Player;Game;