sys-apps/openrc: fix upgrade handling

This removes redundant code from 0.45.x. We don't need the downgrade
logic here, just the upgrade logic.

Signed-off-by: William Hubbs <williamh@gentoo.org>

sys-apps/openrc/openrc-0.45.ebuild

@@ -160,11 +160,5 @@ pkg_postinst() {
 				rc-update add seedrng boot
 		fi
 		fi
-		if ver_test $v -gt 0.45; then
-			if rc-update show boot | grep -q seedrng; then
-				rc-update del seedrng boot
-				rc-update add urandom boot
-		fi
-		fi
 	done
 }