toplevel.mk: drop LD_LIBRARY_PATH overrides

toplevel.mk: drop LD_LIBRARY_PATH overrides

Overriding LD_LIBRARY_PATH for host utilities frequently leads to problems
with host executables loading shared libraries from the staging_dir, leading
to crashes due to incompatible ABIs.

Since most host utilties either embed a proper rpath or are reworked to link
statically we do not need the workaround anymore.

Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@47103 3c298f89-4303-0410-b956-a3cf2f4a3e73