package/cargo-bin: remove and use cargo-bin from rust-bin package

package/cargo-bin: remove and use cargo-bin from rust-bin package

Rust upstream distributes tarballs with separate rust and cargo
binaries, but also tarballs with everything together. The latter
contains a bit more than what we need, so the download is slightly
larger than separate cargo-bin and rust-bin. But it simplifies our life
if we do the same in rust-bin as in rust (i.e. get both rust and cargo).

Signed-off-by: Patrick Havelange <patrick.havelange@essensium.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Tested-by: David Pierret <david.pierret@smile.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>