/*
 *  call-seq:
 *     dir.delete(file_name) -> nil
 *
 *  Remove file +file_name+ from the directory. Returns true if successful.
 */
static VALUE
frt_dir_delete(VALUE self, VALUE rfname)
{
    Store *store = DATA_PTR(self);
    StringValue(rfname);
    return (store->remove(store, rs2s(rfname)) == 0) ? Qtrue : Qfalse;
}