Now that all packages that relied on the skip mechanism are selected
via BUILD_DEVICES or by defaulting for the subtarget drop them from
individual DEVICE_PACKAGES so that Image Builder works again for armv8_64b.
Fixes: #18412
Link: https://github.com/openwrt/openwrt/pull/18462
Signed-off-by: Robert Marko <robimarko@gmail.com>
c04eaad12a