try to get rid of some more obsolete files (doesnt compile now)

source/WARNING

source/ac/withenable.ac

source/aclocal.m4

source/auxdir/auxsub/Makefile.in

source/auxdir/auxsub/aclocal.m4

source/auxdir/auxsub/configure

source/build-aux/mkinstalldirs

source/configure

source/libs/ac/withenable.ac

source/libs/configure.ac

source/libs/libpng/libpng-1.2.40-PATCHES/TL-Changes

source/libs/libpng/libpng-1.2.40/aclocal.m4

source/libs/libpng/libpng-1.2.40/ltmain.sh

source/texk/Makefile.in

source/texk/aclocal.m4

source/texk/add-info-toc

source/texk/autoconf2.13

source/texk/configure

source/texk/dummy/.gitignore

source/texk/dummy/Makefile.am