providers/mailgun: smtp_password is required, no need for pub api key

builtin/providers/mailgun/config.go

@@ -8,7 +8,7 @@ import (
 )
 
 type Config struct {
-	APIKey       string `mapstructure:"api_key"`
+	APIKey string `mapstructure:"api_key"`
 }
 
 // Client() returns a new client for accessing mailgun.

builtin/providers/mailgun/provider.go

@@ -13,12 +13,7 @@ func Provider() *schema.Provider {
 		Schema: map[string]*schema.Schema{
 			"api_key": &schema.Schema{
 				Type:     schema.TypeString,
-				Optional: false,
-			},
-
-			"public_api_key": &schema.Schema{
-				Type:     schema.TypeString,
-				Optional: false,
+				Required: true,
 			},
 		},
 

builtin/providers/mailgun/resource_mailgun_domain.go

@@ -30,7 +30,6 @@ func resourceMailgunDomain() *schema.Resource {
 
 			"smtp_password": &schema.Schema{
 				Type:     schema.TypeString,
-				Computed: true,
 				ForceNew: true,
 				Required: true,
 			},