CD: removing broken auth option

Author: chrmod

CliqzJenkinsfile.nightly

@@ -18,7 +18,6 @@ node('gideon') {
                 config.vm.synced_folder ".", "/vagrant", disabled: true
                 config.vm.define "publishios" do |publishios|
                     publishios.vm.hostname ="publishios"
-                    config.ssh.private_key_path = "/Users/jenkins/reusable-VMs/publishios/.vagrant/machines/publishios/virtualbox/private_key"
                     publishios.vm.network "public_network", :bridge => "en0: Ethernet 1", auto_config: false
                     publishios.vm.boot_timeout = 900
                     publishios.ssh.forward_agent = true