poky-tiny: Reduce busybox size by 13%

Busybox has released several new verisions since this config was last
generated, they come with new features, new defaults as well as
dropping some existing features.

This patch updates the defconfig used in poky-tiny to reflect the
changes mentioned above, it also reduces some seldom used functionality,
reducing the installed size by 13%, this can certainly be reduced
further if required.

[YOCTO #12170]

(From meta-yocto rev: b03bda01316d79b53ed2cac97566e647cdaada4f)

Signed-off-by: Alejandro Enedino Hernandez Samaniego <alejandro.hernandez@linux.microsoft.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>