build: Remove two dead recipes from Makefile.in.

In commit f5fb7ab5 we switched from skencil to dia for creating the
overview.pdf file.  This commit missed to remove the Make recipes
for creating the pdf file from the skencil sources. Remove it now.

diff --git a/Makefile.in b/Makefile.in
index cf8b9f71f0684d4f0184a03ff3b2b519d6e9b44f..bcc19a09b35b816aa76680298b7beec6b3148ee3 100644 (file)
--- a/Makefile.in
+++ b/Makefile.in
@@ -329,9 +329,4 @@ $(tarball):
        bzip2 -9 $(tarball_pfx).tar
        ls -l $(tarball_pfx).tar.bz2
        rm -rf $(tarball_pfx)
-%.ps: %.sk
-       sk2ps $< > $@
-%.pdf: %.ps
-       ps2pdf - - < $< > $@
-
 include $(test_dir)/makefile.test