builder/amazon/all: get rid of unnecessary field

builder/amazon/chroot/step_attach_volume.go

@@ -46,7 +46,6 @@ func (s *StepAttachVolume) Run(state multistep.StateBag) multistep.StepAction {
 
 	// Wait for the volume to become attached
 	stateChange := awscommon.StateChangeConf{
-		Conn:      ec2conn,
 		Pending:   []string{"attaching"},
 		StepState: state,
 		Target:    "attached",
@@ -102,7 +101,6 @@ func (s *StepAttachVolume) CleanupFunc(state multistep.StateBag) error {
 
 	// Wait for the volume to detach
 	stateChange := awscommon.StateChangeConf{
-		Conn:      ec2conn,
 		Pending:   []string{"attaching", "attached", "detaching"},
 		StepState: state,
 		Target:    "detached",

builder/amazon/chroot/step_create_volume.go

@@ -65,7 +65,6 @@ func (s *StepCreateVolume) Run(state multistep.StateBag) multistep.StepAction {
 
 	// Wait for the volume to become ready
 	stateChange := awscommon.StateChangeConf{
-		Conn:      ec2conn,
 		Pending:   []string{"creating"},
 		StepState: state,
 		Target:    "available",

builder/amazon/chroot/step_register_ami.go

@@ -53,7 +53,6 @@ func (s *StepRegisterAMI) Run(state multistep.StateBag) multistep.StepAction {
 
 	// Wait for the image to become ready
 	stateChange := awscommon.StateChangeConf{
-		Conn:      ec2conn,
 		Pending:   []string{"pending"},
 		Target:    "available",
 		Refresh:   awscommon.AMIStateRefreshFunc(ec2conn, registerResp.ImageId),

builder/amazon/chroot/step_snapshot.go

@@ -37,7 +37,6 @@ func (s *StepSnapshot) Run(state multistep.StateBag) multistep.StepAction {
 
 	// Wait for the snapshot to be ready
 	stateChange := awscommon.StateChangeConf{
-		Conn:      ec2conn,
 		Pending:   []string{"pending"},
 		StepState: state,
 		Target:    "completed",

builder/amazon/common/state.go

@@ -23,7 +23,6 @@ type StateRefreshFunc func() (result interface{}, state string, err error)
 
 // StateChangeConf is the configuration struct used for `WaitForState`.
 type StateChangeConf struct {
-	Conn      *ec2.EC2
 	Pending   []string
 	Refresh   StateRefreshFunc
 	StepState multistep.StateBag

builder/amazon/common/step_ami_region_copy.go

@@ -83,7 +83,6 @@ func amiRegionCopy(state multistep.StateBag, auth aws.Auth, imageId string,
 	}
 
 	stateChange := StateChangeConf{
-		Conn:      regionconn,
 		Pending:   []string{"pending"},
 		Target:    "available",
 		Refresh:   AMIStateRefreshFunc(regionconn, resp.ImageId),

builder/amazon/common/step_run_source_instance.go

@@ -95,7 +95,6 @@ func (s *StepRunSourceInstance) Run(state multistep.StateBag) multistep.StepActi
 
 	ui.Say(fmt.Sprintf("Waiting for instance (%s) to become ready...", s.instance.InstanceId))
 	stateChange := StateChangeConf{
-		Conn:      ec2conn,
 		Pending:   []string{"pending"},
 		Target:    "running",
 		Refresh:   InstanceStateRefreshFunc(ec2conn, s.instance),
@@ -145,7 +144,6 @@ func (s *StepRunSourceInstance) Cleanup(state multistep.StateBag) {
 	}
 
 	stateChange := StateChangeConf{
-		Conn:    ec2conn,
 		Pending: []string{"pending", "running", "shutting-down", "stopped", "stopping"},
 		Refresh: InstanceStateRefreshFunc(ec2conn, s.instance),
 		Target:  "terminated",

builder/amazon/ebs/step_create_ami.go

@@ -40,7 +40,6 @@ func (s *stepCreateAMI) Run(state multistep.StateBag) multistep.StepAction {
 
 	// Wait for the image to become ready
 	stateChange := awscommon.StateChangeConf{
-		Conn:      ec2conn,
 		Pending:   []string{"pending"},
 		Target:    "available",
 		Refresh:   awscommon.AMIStateRefreshFunc(ec2conn, createResp.ImageId),

builder/amazon/ebs/step_stop_instance.go

@@ -28,7 +28,6 @@ func (s *stepStopInstance) Run(state multistep.StateBag) multistep.StepAction {
 	// Wait for the instance to actual stop
 	ui.Say("Waiting for the instance to stop...")
 	stateChange := awscommon.StateChangeConf{
-		Conn:      ec2conn,
 		Pending:   []string{"running", "stopping"},
 		Target:    "stopped",
 		Refresh:   awscommon.InstanceStateRefreshFunc(ec2conn, instance),

builder/amazon/instance/step_register_ami.go

@@ -38,7 +38,6 @@ func (s *StepRegisterAMI) Run(state multistep.StateBag) multistep.StepAction {
 
 	// Wait for the image to become ready
 	stateChange := awscommon.StateChangeConf{
-		Conn:      ec2conn,
 		Pending:   []string{"pending"},
 		Target:    "available",
 		Refresh:   awscommon.AMIStateRefreshFunc(ec2conn, registerResp.ImageId),