Remove unnecessary ternary operation.

Since we moved to `default.config.yml` the
`vagrant_synced_folder_default_type` will always be set.

Author: oxyc

Vagrantfile

@@ -154,7 +154,7 @@ Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
   end
 
   # Allow override of the default synced folder type.
-  config.vm.synced_folder host_project_dir, '/vagrant', type: vconfig.include?('vagrant_synced_folder_default_type') ? vconfig['vagrant_synced_folder_default_type'] : 'nfs'
+  config.vm.synced_folder host_project_dir, '/vagrant', type: vconfig['vagrant_synced_folder_default_type']
 
   config.vm.provision provisioner do |ansible|
     ansible.playbook = playbook
@@ -207,7 +207,7 @@ Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
     # Cache the composer directory.
     config.cache.enable :generic, cache_dir: '/home/vagrant/.composer/cache'
     config.cache.synced_folder_opts = {
-      type: vconfig.include?('vagrant_synced_folder_default_type') ? vconfig['vagrant_synced_folder_default_type'] : 'nfs'
+      type: vconfig['vagrant_synced_folder_default_type']
     }
   end