toplevel.mk: remove legacy packages feed from 'make distclean'

package/openwrt-packages is left over
from what is now a legacy repository
and has no other reference in the build tree

Signed-off-by: Michael Pratt <mcpratt@pm.me>
This commit is contained in:
Michael Pratt 2021-01-30 19:01:32 -05:00 committed by Paul Spooren
parent 910b5d669f
commit 8d8125a43b