That is a pretty old snapshot version. Current snapshot is #1307.
You should at least upgrade to openHAB 2.3 stable.
The proper way to do that is:
uninstall the binding the way you did install it. So if you did install it via GUI, uninstall it via GUI.
If it does not work uninstall it via karaf.
If it is still not gone (check via bundle:list), clear cache and tmp.
After you got rid of the binding drop the jar into the addons folder. It should be active automatically.
If the transport serial is missing install it.
If you are finished restart openHAB. It will take a while because you cleared tmp and Cache …