Vagrant won't 'up' with these 2 options set

removed 2 ssh tweaks so 'vagrant up centos-6' runs:

sample-python-omnibus-app:$ vagrant up centos-6
Bringing machine 'centos-6' up with 'virtualbox' provider...
There are errors in the configuration of this machine. Please fix
the following errors and try again:

SSH:
* The following settings shouldn't exist: max_tries, timeout