This method will remove a directory on remote server, if
possible. Once completed, the Done event will be
fired. If no error occurs, the ErrorCode argument in the Done event will be set to
0 (zero). If an error occurs, ErrorCode will hold the number of the error and
ErrorText will contain a description
for the error.
If the remote directory contains a file or subdirectories
it is possible (and the usual behavior) that you will
be unable to remove it. This depends on the implementation of
this command on server side.
No wildcards can be used for RemotePath argument. The RFC protocol specification
for SFTP does not allow them.