Remove redundant appendix

Makefile

@@ -10,8 +10,6 @@ $(DOCHANDLE).pdf: main.tex meta.tex changes.tex contents.tex
 
 contents.tex: contents
 	ls contents/[[:digit:]]-*tex | sed -e's/\(.*\)$$/\\include{\1}/' > $@
-	printf "%s\n" "\\appendix" >>$@
-	ls contents/[a-z]-*tex | sed -e's/\(.*\)$$/\\include{\1}/' >> $@
 
 include astron-texmf/make/vcs-meta.make
 include astron-texmf/make/changes.make

contents/a-app.tex

-\section{Example appendix}