fix: remove duplicate AssemblyInfo.cs for SDK-style project

Author: CalvinAllen

.gitignore

@@ -183,6 +183,9 @@ orleans.codegen.cs
 # RIA/Silverlight projects
 Generated_Code/
 
+# SDK-style project generated files
+Generated/
+
 # Backup & report files from converting an old project file
 # to a newer Visual Studio version. Backup files are not needed,
 # because we have git ;-)