package/selinux-python: remove redundant dependencies

package/selinux-python: remove redundant dependencies

The selinux-python package has two sub-packages, audit2allow and
sepolgen. Both of these repeat the dependencies (and comment) of the
top-level selinux-python package. Remove those redundant dependencies
(and comments).

This redundancy was introduced by commit 9d6da7a26. Originally, sepolgen
was a separate package and audit2allow was a sub-package of
policycoreutils, so both of them had these dependencies. When the two
options were moved into selinux-python, the dependencies stayed.

Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>