vagrant: remove outdated comment

Vagrantfile

@@ -408,7 +408,4 @@ Vagrant.configure(2) do |config|
     b.vm.provision "install borg", :type => :shell, :privileged => false, :inline => install_borg("nofuse")
     b.vm.provision "run tests", :type => :shell, :privileged => false, :inline => run_tests("openindiana64", ".*fuse.*")
   end
-
-  # TODO: create more VMs with python 3.9+ and openssl 1.1.
-  # See branch 1.1-maint for a better equipped Vagrantfile (but still on py35 and openssl 1.0).
 end