removing files sometimes generated by R CMD check locally by phylotorture.R

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/phylobase@871 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
fixed typo

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/phylobase@872 edb9625f-4e0d-4859-8d74-9fd3b1da38cb