asterisk-chan-lantiq: remove nonshared hack

asterisk-chan-lantiq: remove nonshared hack

The previously conceived hack - to make the buildbots actually build
this package during the target phase - does not work. This patch removes
the hack. This includes removing the lines from the asterisk Makefiles
that tar up the asterisk headers.

The upside of removing the hack is that the package name can be reverted
to what it was before, so it can be found in the same place like all the
other asterisk modules, i.e. below its asterisk version.

Another upside is that the Makefile does not pretend to solve the
problem anymore. Issue #193 is still open for the same. Maybe some day
somebody can figure out how to resolve the problem properly.

Signed-off-by: Sebastian Kemper <sebastian_ml@gmx.net>