1. Remove useless LDFLAGS -- dynamic linker is not used here.

2. Remove $(iquotes) -- there are none defined here.

3. Consolidate filter-out statements into a single one.
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>