remove unused OpenRA.Server extensions

OpenRA.Game/Server/Exts.cs

@@ -16,21 +16,9 @@ namespace OpenRA.Server
 {
 	static class Exts
 	{
-		public static void Write( this Stream s, byte[] data )
+		public static IEnumerable<T> Except<T>(this IEnumerable<T> ts, T t)
 		{
-			s.Write( data, 0, data.Length );
-		}
-
-		public static byte[] Read( this Stream s, int len )
-		{
-			var data = new byte[ len ];
-			s.Read( data, 0, len );
-			return data;
-		}
-
-		public static IEnumerable<T> Except<T>( this IEnumerable<T> ts, T t )
-		{
-			return ts.Except( new[] { t } );
+			return ts.Except(new[] { t });
 		}
 	}
 }