Fixes [YOCTO #4497]
Usage of FILESPATH is discouraged, since it can make recipes harder to
bbappend. Instead FILESEXTRAPATHS should be used to extend the path.
However in nativesdk-qemu-helper no FILESPATH additions are currently needed so
instead it should be removed.
(From OE-Core rev: cd35938fa4fac4451da3ef32626988c51ed8c021)
Signed-off-by: Petter Mabäcker <petter@technux.se>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>