drivers: remove unneeded `GetDockerConfigDir()` and `dockerConfigDir` const

This method is not part of the driver interface anymore.

Signed-off-by: Vincent Bernat <Vincent.Bernat@exoscale.ch>

drivers/azure/azure.go

@@ -22,10 +22,6 @@ import (
 	"github.com/docker/machine/state"
 )
 
-const (
-	dockerConfigDir = "/etc/docker"
-)
-
 type Driver struct {
 	MachineName             string
 	SubscriptionID          string

drivers/digitalocean/digitalocean.go

@@ -16,10 +16,6 @@ import (
 	"github.com/docker/machine/state"
 )
 
-const (
-	dockerConfigDir = "/etc/docker"
-)
-
 type Driver struct {
 	AccessToken       string
 	DropletID         int
@@ -330,10 +326,6 @@ func (d *Driver) Kill() error {
 	return err
 }
 
-func (d *Driver) GetDockerConfigDir() string {
-	return dockerConfigDir
-}
-
 func (d *Driver) getClient() *godo.Client {
 	t := &oauth.Transport{
 		Token: &oauth.Token{AccessToken: d.AccessToken},

drivers/google/google.go

@@ -12,10 +12,6 @@ import (
 	"github.com/docker/machine/state"
 )
 
-const (
-	dockerConfigDir = "/etc/docker"
-)
-
 // Driver is a struct compatible with the docker.hosts.drivers.Driver interface.
 type Driver struct {
 	MachineName    string

drivers/hyperv/hyperv_windows.go

@@ -18,10 +18,6 @@ import (
 	"github.com/docker/machine/utils"
 )
 
-const (
-	dockerConfigDir = "/var/lib/boot2docker"
-)
-
 type Driver struct {
 	SSHUser        string
 	SSHPort        int

drivers/openstack/openstack.go

@@ -16,10 +16,6 @@ import (
 	"github.com/docker/machine/state"
 )
 
-const (
-	dockerConfigDir = "/etc/docker"
-)
-
 type Driver struct {
 	AuthUrl          string
 	Insecure         bool

drivers/rackspace/rackspace.go

@@ -9,10 +9,6 @@ import (
 	"github.com/docker/machine/drivers/openstack"
 )
 
-const (
-	dockerConfigDir = "/etc/docker"
-)
-
 // Driver is a machine driver for Rackspace. It's a specialization of the generic OpenStack one.
 type Driver struct {
 	*openstack.Driver
@@ -108,10 +104,6 @@ func (d *Driver) DriverName() string {
 	return "rackspace"
 }
 
-func (d *Driver) GetDockerConfigDir() string {
-	return dockerConfigDir
-}
-
 func missingEnvOrOption(setting, envVar, opt string) error {
 	return fmt.Errorf(
 		"%s must be specified either using the environment variable %s or the CLI option %s",

drivers/softlayer/driver.go

@@ -17,8 +17,7 @@ import (
 )
 
 const (
-	dockerConfigDir = "/etc/docker"
-	ApiEndpoint     = "https://api.softlayer.com/rest/v3"
+	ApiEndpoint = "https://api.softlayer.com/rest/v3"
 )
 
 type Driver struct {

drivers/virtualbox/virtualbox.go

@@ -26,8 +26,7 @@ import (
 )
 
 const (
-	dockerConfigDir = "/var/lib/boot2docker"
-	isoFilename     = "boot2docker.iso"
+	isoFilename = "boot2docker.iso"
 )
 
 type Driver struct {

drivers/vmwarefusion/fusion_darwin.go

@@ -29,10 +29,9 @@ import (
 )
 
 const (
-	B2D_USER        = "docker"
-	B2D_PASS        = "tcuser"
-	dockerConfigDir = "/var/lib/boot2docker"
-	isoFilename     = "boot2docker-1.5.0-GH747.iso"
+	B2D_USER    = "docker"
+	B2D_PASS    = "tcuser"
+	isoFilename = "boot2docker-1.5.0-GH747.iso"
 )
 
 // Driver for VMware Fusion

drivers/vmwarevcloudair/vcloudair.go

@@ -21,10 +21,6 @@ import (
 	"github.com/docker/machine/state"
 )
 
-const (
-	dockerConfigDir = "/etc/docker"
-)
-
 type Driver struct {
 	UserName       string
 	UserPassword   string

drivers/vmwarevsphere/vsphere.go

@@ -32,7 +32,6 @@ const (
 	isoFilename        = "boot2docker-1.5.0-GH747.iso"
 	B2D_ISO_NAME       = isoFilename
 	DEFAULT_CPU_NUMBER = 2
-	dockerConfigDir    = "/var/lib/boot2docker"
 	B2D_USER           = "docker"
 	B2D_PASS           = "tcuser"
 )