fix: remove ssh key for Vagrantfile

Vagrantfile

@@ -4,11 +4,7 @@ Vagrant.configure("2") do |config|
     config.vm.network "forwarded_port", guest: 8000, host: 8000
 
     config.vm.provision "shell" do |s|
-        ssh_pub_key = File.readlines("#{Dir.home}/.ssh/id_rsa.pub").first.strip
         s.inline = <<-SHELL
-            echo #{ssh_pub_key} >> /home/vagrant/.ssh/authorized_keys
-            echo #{ssh_pub_key} >> /root/.ssh/authorized_keys
-
             curl -fsSL https://crystal-lang.org/install.sh | sudo bash
 
             curl -LO https://github.com/tsenart/vegeta/releases/download/v12.7.0/vegeta-12.7.0-linux-amd64.tar.gz