Guest `halt` implementations no longer depend on machine state

plugins/guests/freebsd/guest.rb

@@ -13,17 +13,6 @@ module VagrantPlugins
 
       def halt
         vm.channel.sudo("shutdown -p now")
-
-        # Wait until the VM's state is actually powered off. If this doesn't
-        # occur within a reasonable amount of time (15 seconds by default),
-        # then simply return and allow Vagrant to kill the machine.
-        count = 0
-        while vm.state != :poweroff
-          count += 1
-
-          return if count >= vm.config.freebsd.halt_timeout
-          sleep vm.config.freebsd.halt_check_interval
-        end
       end
 
       # TODO: vboxsf is currently unsupported in FreeBSD, if you are able to

plugins/guests/linux/guest.rb

@@ -35,17 +35,6 @@ module VagrantPlugins
 
       def halt
         @vm.communicate.sudo("shutdown -h now")
-
-        # Wait until the VM's state is actually powered off. If this doesn't
-        # occur within a reasonable amount of time (15 seconds by default),
-        # then simply return and allow Vagrant to kill the machine.
-        count = 0
-        while @vm.state != :poweroff
-          count += 1
-
-          return if count >= @vm.config.linux.halt_timeout
-          sleep @vm.config.linux.halt_check_interval
-        end
       end
 
       def mount_shared_folder(name, guestpath, options)

plugins/guests/openbsd/guest.rb

@@ -7,17 +7,6 @@ module VagrantPlugins
     class Guest < VagrantPlugins::GuestLinux::Guest
       def halt
         vm.channel.sudo("shutdown -p -h now")
-
-        # Wait until the VM's state is actually powered off. If this doesn't
-        # occur within a reasonable amount of time then simply return which
-        # will cause Vagrant to force kill the machine.
-        count = 0
-        while vm.state != :poweroff
-          count += 1
-
-          return if count >= 30
-          sleep 1
-        end
       end
     end
   end

plugins/guests/solaris/guest.rb

@@ -45,35 +45,7 @@ module VagrantPlugins
       #
       # does not exist in /etc/user_attr. TODO
       def halt
-        # Wait until the VM's state is actually powered off. If this doesn't
-        # occur within a reasonable amount of time (15 seconds by default),
-        # then simply return and allow Vagrant to kill the machine.
-        count = 0
-        last_error = nil
-        while vm.state != :poweroff
-          begin
         vm.channel.execute("#{vm.config.solaris.suexec_cmd} /usr/sbin/poweroff")
-          rescue IOError => e
-            # Save the last error; if it's not shutdown in a reasonable amount
-            # of attempts we will re-raise the error so it's not hidden for
-            # all time
-            last_error = e
-          end
-
-          count += 1
-          if count >= vm.config.solaris.halt_timeout
-            # Check for last error and re-raise it
-            if last_error != nil
-              raise last_error
-            else
-              # Otherwise, just return
-              return
-            end
-          end
-
-          # Still opportunities remaining; sleep and loop
-          sleep vm.config.solaris.halt_check_interval
-        end # while
       end
 
       def mount_shared_folder(name, guestpath, options)