Yes, that's certainly an option. Verrucae can be left untreated if they are not causing problems. However, if they are causing discomfort when you walk or put pressure on the foot, then it is generally best to get them treated. In addition, remember that verruca is quite contagious, so you may want to get rid of it to avoid the is a risk of passing it on e.g. swimming pool, gym, family bathroom.