util-linux: remove 'which' from -ptest RDEPENDS

The 'kill' test case which to find a kill binary (not built-in). The
which implementation in busybox is perfectly sufficient for this purpose.

(From OE-Core rev: b84d2d80df91b7789570a389c35a78f922e37d02)

Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/util-linux/util-linux_2.41.1.bb

@@ -206,7 +206,7 @@ RDEPENDS:${PN}-dev += " util-linux-libuuid-dev"
 RPROVIDES:${PN}-dev = "${PN}-libblkid-dev ${PN}-libmount-dev"
 
 RDEPENDS:${PN}-bash-completion += "${PN}-lsblk ${PN}-findmnt"
-RDEPENDS:${PN}-ptest += "bash bc btrfs-tools coreutils e2fsprogs findutils grep iproute2 kmod procps sed socat which xz diffutils"
+RDEPENDS:${PN}-ptest += "bash bc btrfs-tools coreutils e2fsprogs findutils grep iproute2 kmod procps sed socat xz diffutils"
 RRECOMMENDS:${PN}-ptest += "kernel-module-scsi-debug kernel-module-sd-mod kernel-module-loop kernel-module-algif-hash"
 RDEPENDS:${PN}-swaponoff = "${PN}-swapon ${PN}-swapoff"
 ALLOW_EMPTY:${PN}-swaponoff = "1"