[simple-scan] Drop obsolete type property

[Robert Ancell <rancell src gnome org>]

commit 86dbff2a944a56e080a49b7c7fbe521da115b3d6
Author: Robert Ancell <robert ancell canonical com>
Date:   Wed Sep 20 16:04:14 2017 +1200

    Drop obsolete type property

 data/simple-scan.appdata.xml.in |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/data/simple-scan.appdata.xml.in b/data/simple-scan.appdata.xml.in
index 0d306cd..2ad025d 100644
--- a/data/simple-scan.appdata.xml.in
+++ b/data/simple-scan.appdata.xml.in
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <component type="desktop">
-  <id type="desktop">simple-scan.desktop</id>
+  <id>simple-scan.desktop</id>
   <metadata_licence>CC0-1.0</metadata_licence>
   <project_license>GPL-3.0+ and CC-BY-SA-3.0</project_license>
   <name>Simple Scan</name>