Looks like you have some devices scanned into SmartStart that are trying to join as Long Range and keep failing, causing those extra nodes.
First thing I would do is shut down the hub, unplug for 30 seconds then boot back up. That itself might make those dead nodes go away.
Might also want to check out this app and make sure you dont have extraneous entries in your SmartStart data. [APP] SmartStart Manager for Z-Wave (Long Range support)
Once that is sorted out to prevent more new nodes, you could then try one at a time refresh those LR nodes which should then give you a Remove button.
Check the live logs while doing this, if you are getting a Z-wave busy error then those nodes may not actually be there and the shutdown unplug for 30 seconds, as I said above, should make them go away.
