Comment out manual addition of vbox extensions
Comment out manual addition of vbox extensions

kraksoft/vagrant-box,code-kitchen/vagrant-debian-jessie-64,dotzero/vagrant-debian-jessie-64,Gasol/vagrant-debian-jessie-64,ginas/vagrant-debian-wheezy-64,nvtkaszpir/vagrant-box,xezpeleta/vagrant-debian-jessie-64,wummel/vagrant-virtualbox-debian-base,crazycode/vagrant-debian-wheezy-64,dforsber-p/vagrant-debian-jessie-64,shtouff/vagrant-debian-jessie-64,jstuyts/vagrant-jessie-minimal-amd64-customizable