package/tar: drop specific version for host variant

package/tar: drop specific version for host variant

Now that we can generate reproducible archives, with all known tar
versions starting with 1.27, we don't need to clamp the host-tar
version to the old 1.29, and can now bump to any later version.

Drop the host-tar version, and use the same as the target variant.

Note that we still need the _SOURCE trick, to avoid depending on tar
to extract the tar tarball...

Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Vincent Fazio <vfazio@xes-inc.com>
Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Reviewed-by: Vincent Fazio <vfazio@xes-inc.com>