remove useless aux files
Merge branch 'master' of https://github.com/langsci/latex
Merge branch 'master' of https://github.com/langsci/latex
Merge branch 'master' of https://github.com/langsci/latex
Merge branch 'master' of https://github.com/langsci/latex
Merge branch 'master' of https://github.com/langsci/latex