[xml/sgml-pkgs] Bug#396416: Bug #396416 libxml2-dev: libxml2.la leaves out dependencies on -lz -lm

[Aron Xu]

As the LA-Removal release goal has got a lot progress and all reverse
dependencies of libxml2
has been either removed there .la file or emptied dependency_libs, we
have removed .la file of libxml2 as its usually useless or even
harmful in some case. pkg-config can help with static linking, so
don't rely on the information from .la file as many of them has gone
from Debian.

Just for record.

-- 
Regards,
Aron Xu