Remove Metadata.xml of MonoCatalogSample.

MonoCatalogSample/Metadata.xml

@@ -1,7 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<SampleMetadata>
-	<ID>33c14f99-8d5f-4524-bb67-8db3291cfd77</ID>
-	<IsFullApplication>false</IsFullApplication>
-	<Level>Beginning</Level>
-	<Tags>User Interface, Shared Resources, Web</Tags>
-</SampleMetadata>