removing old tutorial, all have been migrated to azure-samples repo

Author: unknown

Readme.md

@@ -4,5 +4,4 @@ In this repo you can find the following;
 
 - **azure-mobileservices-net/** - A DocumentDB Domain Manager for Azure Mobile Services
 - **samples/** - a great source of sample code showing you how to use the .NET SDK in your projects.
-- **sdk/** - the source for the .NET SDK will be published here as soon as possible. 
-- **tutorials/** - the source for some end-to-end applications built using this .NET SDK.
+- **sdk/** - the source for the .NET SDK will be published here as soon as possible.