[aur-general] Convention question

I was making my first svn package and I used some examples I found online. The abiword-svn package removes the svn directory at the end of the package build. Is that the correct thing to do? It does not make sense to me. The abiword package is at http://aur.archlinux.org/packages.php?ID=34444 And the new package I created is at http://aur.archlinux.org/packages.php?ID=37712 -- Stephen