'hideSignUpLink' option doesn't hide signUp link

I downloaded a Meteor Starter project called MeteorAdmin. This project uses meteor-useraccounts package

I would want to prevent the "Don't have an account? Register" sentence from appearing on the default SignIn view.

So in accounts.coffee I changed this:

AccountsTemplates.configureRoute 'signIn'
AccountsTemplates.configureRoute 'signUp'


AccountsTemplates.configureRoute 'signIn' ,
  hideSignUpLink: true
AccountsTemplates.configureRoute 'signUp'

This did not work! Although the meteor-useraccounts documentation says it should work, hence this question