I moved your thread to the correct forum.
As for your first question, there are two ways to get a file deleted from the site. You can click the "Report this File" link at the bottom of the page and ask for it to be removed, or you can create a thread in this section of the forums with a link to the file you wish to be deleted.
For your second question, you are more than welcome to use our SVN or Git repositories as you work on a project. When it is ready for release, you then use the control panel to make a zip and upload it to a new or pre-existing project.
Here are the help guides for using SVN and Git on our site:
http://www.wowinterface.com/forums/f...eloper#faq_git