Remove code to handle older style of gids

DepotDownloader/ContentDownloader.cs

@@ -241,7 +241,7 @@ namespace DepotDownloader
             if (manifests.Children.Count == 0 && manifests_encrypted.Children.Count == 0)
                 return INVALID_MANIFEST_ID;
 
-            var node = manifests[branch].Children.Count > 0 ? manifests[branch]["gid"] : manifests[branch];
+            var node = manifests[branch]["gid"];
 
             if (branch != "Public" && node == KeyValue.Invalid)
             {
@@ -257,11 +257,6 @@ namespace DepotDownloader
 
                     var encrypted_gid = node_encrypted["gid"];
 
-                    if (encrypted_gid == KeyValue.Invalid)
-                    {
-                        encrypted_gid = node_encrypted["encrypted_gid_2"];
-                    }
-
                     if (encrypted_gid != KeyValue.Invalid)
                     {
                         // Submit the password to Steam now to get encryption keys