travis: don't run tests on python3.3
travis: don't run tests on python3.3

beancount just doesn't seem to support it

yagebu/fava,corani/beancount-web,beancount/fava,aumayr/beancount-web,beancount/fava,yagebu/fava,yagebu/fava,yagebu/fava,corani/beancount-web,yagebu/fava,beancount/fava,beancount/fava,corani/beancount-web,aumayr/beancount-web,beancount/fava,corani/beancount-web,aumayr/beancount-web,aumayr/beancount-web