Cannot delete repository because importing failed (SVN). Would like to re-import.

I'm trying to import some of my repositories and these gave error:

13:08:57 svn import is: http://dharma.adaptivesoft.com.br:81/svn/ControleLicenca/\\
13:08:57 Checking out http://dharma.adaptivesoft.com.br:81/svn/ControleLicenca/ ...
13:08:58 svn: OPTIONS of 'http://dharma.adaptivesoft.com.br:81/svn/ControleLicenca': authorization failed: Could not authenticate to server: rejected Basic challenge (http://dharma.adaptivesoft. com.br: 81)
13:08:58 svn checkout failed:% s:% s

When I have success in an import, I can delete the repository.

Please, how can I delete these that are in error? they are:

adaptivethiago / Framework
adaptivethiago / newControleLicenca
adaptivethiago / thiago
adaptivethiago / 123465
adaptivethiago / test
adaptivethiago / ControleLicenca
adaptivethiago / Quality