src/poky:findutils: use getlimits from findutils

Having findutils depending on coreutils-getlimits makes it harder to replace GNU coreutils with uutils-coreutils
using PREFERRED_PROVIDER.
Also, the findutils repository contains a version of getlimits used for the tests, so there is no need to depend
on coreutils's version of getlimits.

(From OE-Core rev: 4e4149c13adda3dd3b07712b1025ef077dd460b4)

Signed-off-by: Etienne Cordonnier <ecordonniersnap.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briandbootlin.com>
Signed-off-by: Richard Purdie <richard.purdielinuxfoundation.org>

Author: Ecordonnier