eliminar la carpeta .git
rm -rf .git
Courageous Curlew
rm -rf .git
git rm -r --cached <folder>
git commit -m "Removed Folder"
git push origin master
git rm -r --cached myFolder
git rm -r Name_of_the_directory_you_want_to_delete
git rm -r --cached myFolder
git rm -r one-of-the-directories // This deletes from filesystem
git commit . -m "Remove duplicated directory"
git push origin <your-git-branch> (typically 'master', but not always)