[gnome-boxes] installed-media: Drop redundant 'format' property

[Zeeshan Ali Khattak <zeeshanak src gnome org>]

commit 5d7f302fffe9351b3820d8cc1964e14181d4a962
Author: Zeeshan Ali (Khattak) <zeeshanak gnome org>
Date:   Tue Jul 21 17:04:47 2015 +0100

    installed-media: Drop redundant 'format' property

 src/installed-media.vala |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)
---
diff --git a/src/installed-media.vala b/src/installed-media.vala
index 41a6b5c..a5f75db 100644
--- a/src/installed-media.vala
+++ b/src/installed-media.vala
@@ -17,8 +17,6 @@ private class Boxes.InstalledMedia : Boxes.InstallerMedia {
     public override bool ready_to_create { get { return true; } }
     public override bool live { get { return false; } }
 
-    public string format { get { return device_file.has_suffix (".qcow2")? "qcow2" : "raw"; } }
-
     protected override string? architecture {
         owned get {
             // Many distributors provide arch name on the image file so lets try to use that if possible