remove ssh sync folder

Author: hel-kame

Vagrantfile

@@ -6,7 +6,6 @@ LOCAL_USER = ENV['USER']
 Vagrant.configure("2") do |config|
   config.vm.box = "ubuntu/bionic64"
   config.vm.hostname = "#{LOCAL_USER}"
-  config.vm.synced_folder "~/.ssh", "/home/vagrant/.ssh"
   config.vm.provider "virtualbox" do |v|
     v.gui = true
     v.memory = 4096