How to delete fiiles on the server that were accidentally part of an import?

I used the following command to import a folder with files into Subversion
without having to create a checked out copy of the new server side folder.
All of this on a single line in Windows cmd:


svn import LocalFolderName
https://oursvnservername/svn/pc/Name_of_project/tags/Name_of_project_6-3-3 -m
"Importing Name_of_project 6.3.3 for use when building the installers"

After it completed I discovered that a few files that were *not* part of the
project to import were accidentally present in the local source folder...

So now I wonder how I can delete these files *on the server* without first
checking out the project and svn remove them?

Is there a corresponding server side delete that does not require a local copy
first?

In the SvnBook I found this example, which I do not really understand:
----------------
Deleting a URL, however, is immediate, so you have to supply a log message:

$ svn delete -m "Deleting file 'yourfile'" \
             file:///var/svn/repos/test/yourfile

Committed revision 15.
----------------

I don't understand how the syntax should be especially the use of the backslash.
Why is that there?

And my server target is *not* a file: rather it is an https URL as shown above
in my import command.

Please explain.....


-- 
Bo Berglund
Developer in Sweden