Remove dead or redundant code

Signed-off-by: David Gageot <david.gageot@docker.com>

pkg/metadata/main_test.go

@@ -211,6 +211,6 @@ func assertContent(t *testing.T, path, expected string) {
 		t.Fatalf("can't read %v: %v", path, err)
 	}
 	if !bytes.Equal(file, []byte(expected)) {
-		t.Fatalf("%v: expected %v but has %v", path, string(expected), string(file))
+		t.Fatalf("%v: expected %v but has %v", path, expected, string(file))
 	}
 }

pkg/metadata/provider_aws.go

@@ -27,7 +27,7 @@ func (p *ProviderAWS) String() string {
 func (p *ProviderAWS) Probe() bool {
 	// Getting the hostname should always work...
 	_, err := awsGet(metaDataURL + "hostname")
-	return (err == nil)
+	return err == nil
 }
 
 // Extract gets both the AWS specific and generic userdata

pkg/metadata/provider_digitalocean.go

@@ -31,7 +31,7 @@ func (p *ProviderDigitalOcean) String() string {
 func (p *ProviderDigitalOcean) Probe() bool {
 	// Getting the index should always work...
 	_, err := digitalOceanGet(digitalOceanMetaDataURL)
-	return (err == nil)
+	return err == nil
 }
 
 // Extract gets both the DigitalOcean specific and generic userdata

pkg/metadata/provider_gcp.go

@@ -33,7 +33,7 @@ func (p *ProviderGCP) String() string {
 func (p *ProviderGCP) Probe() bool {
 	// Getting the hostname should always work...
 	_, err := gcpGet(instance + "hostname")
-	return (err == nil)
+	return err == nil
 }
 
 // Extract gets both the GCP specific and generic userdata

pkg/metadata/provider_hetzner.go

@@ -28,7 +28,7 @@ func (p *ProviderHetzner) String() string {
 func (p *ProviderHetzner) Probe() bool {
 	// Getting the hostname should always work...
 	_, err := hetznerGet(metaDataURL + "hostname")
-	return (err == nil)
+	return err == nil
 }
 
 // Extract gets both the Hetzner specific and generic userdata

pkg/metadata/provider_metaldata.go

@@ -33,7 +33,7 @@ func (p *ProviderMetaldata) Probe() bool {
 	log.Println("Metaldata: Probing...")
 	// Getting the hostname should always work...
 	_, err := metaldataGet(metaldataMetaDataURL + "hostname")
-	return (err == nil)
+	return err == nil
 }
 
 // Extract gets both the Metaldata specific and generic userdata

pkg/metadata/provider_openstack.go

@@ -27,7 +27,7 @@ func (p *ProviderOpenstack) String() string {
 func (p *ProviderOpenstack) Probe() bool {
 	// Getting the hostname should always work...
 	_, err := openstackGet(metaDataURL + "hostname")
-	return (err == nil)
+	return err == nil
 }
 
 // Extract gets both the OpenStack specific and generic userdata

pkg/metadata/provider_vultr.go

@@ -31,7 +31,7 @@ func (p *ProviderVultr) String() string {
 func (p *ProviderVultr) Probe() bool {
 	// Getting the index should always work...
 	_, err := vultrGet(vultrMetaDataURL)
-	return (err == nil)
+	return err == nil
 }
 
 // Extract gets both the Vultr specific and generic userdata