This method will remove directory on remote server, if
possible. Once completed, Done event will
be fired. If no error occurs, ErrorCode argument in Done event will be set to
0 (zero). If error occurred, ErrorCode will hold number for the error, and
ErrorText will contain description
for the error.
If remote directory contains file or subdirectories -
it's possible (and most common behavior) that you will
be unable to remove it. This depends on implementation of
this command on server side.
No wildcards can be used for RemotePath argument. RFC protocol specification
for FTP or SFTP does not allow them.
Do not forget that RemotePath should always
specify full absolute path (i.e. /home/joe/something) instead of
relative path (i.e. joe/something).