gre.remove_data_listener

gre.remove_data_listener(
    listener
)

Remove a previously added data listener

Parameters:
        listener    An id previously returned from gre.add_data_listener().
Example:
        local var_listener = gre.add_data_listener("var", function(key, value) gre.log("var changed") end)

        --later on, when done with the listener
        gre.remove_data_listener(var_listener)