Revert "systemd: add libblkid and libfdisk PACKAGECONFIG options"

Revert "systemd: add libblkid and libfdisk PACKAGECONFIG options"

The fdisk option is not enabled by default when it should be as that was
the existing behaviour.

Neither of the RDEPENDS are needed, as systemd doesn't call the tools
directly and the library dependencies will be generated automatically.

This reverts commit 4ec67113e1e7e1ecea9cde33ef4d3962dad5f2ad.

Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>