[Dynamic Launch Screens]Tidying metadata tags

ios8/DynamicLaunchScreen/Metadata.xml

@@ -3,9 +3,9 @@
 	<ID>2cbf3de5-5667-4bdf-b3c4-569d0c3594ab</ID>
 	<IsFullApplication>false</IsFullApplication>
 	<Level>Intermediate</Level>
-	<Tags>Platform Features, Size Classes, Storyboards, Auto Layout, iOS8</Tags>
+	<Tags>Platform Features, iOS8</Tags>
 	<SupportedPlatforms>iOS</SupportedPlatforms>
 	<LicenseRequirement>Starter</LicenseRequirement>
 	<Gallery>true</Gallery>
 	<Brief>This sample shows how to make Dynamic Launch Screens using a special type of Storyboard for iOS apps.</Brief>
-</SampleMetadata>
+</SampleMetadata>