Revert "device property: Introduce device_for_each_child_node_scoped()"

This reverts commit 6fedf3dc which is
commit 365130fd upstream.

It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.

Bug: 161946584
Change-Id: I5447b0c06ae8001e384a38d7fbf4c9becebd1dc5
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>