Language folders not always removed after embedding

[tdsrhh]

Some times language folder en-US is not removed after embedding resources.

The build window reports :

1> Deleted resource files 'en-US, nb-NO' as they where embedded into the target. 1> Deleted resource directories 'en-US, nb-NO' as they are empty.

But the folder en-US is still present in the bin folder, even if the folder itself is empty.