Remove manpage creation. It wasn't working because of help2man
missing when libtool is being built. This attempt to create
manpages without help2man turns from no-op to hard error with
automake-1.13.
Removed prefix-manpage-fix.patch as only code it touched is being
removed by new dont-depend-on-help2man.patch
Signed-off-by: Marko Lindqvist <cazfi74@gmail.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
