util-linux: Move the license information to the recipe

util-linux: Move the license information to the recipe

util-linux does not share the license information with
util-linux-libuuid so it makes no sense to have it in the util-linux.inc
file.

This also drops libuuid/COPYING from LIC_FILES_CHKSUM as libuuid is not
built by this recipe.

License-Update: See above
Signed-off-by: Peter Kjellerstedt <peter.kjellerstedt@axis.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>