delete need complete mail setting warning

packages/app/public/static/locales/en_US/admin.json

@@ -106,8 +106,7 @@
       "password_reset_desc": "when forgot password, users are able to reset it by themselves.",
       "email_authentication": "Email authentication on user registration",
       "enable_email_authentication": "Enable email authentication",
-      "enable_email_authentication_desc": "Email authentication is going to be performed for user registration.",
-      "need_complete_mail_setting_warning": "To use the following functions, please complete the mail settings."
+      "enable_email_authentication_desc": "Email authentication is going to be performed for user registration."
     },
     "ldap": {
       "enable_ldap": "Enable LDAP",

packages/app/public/static/locales/ja_JP/admin.json

@@ -114,8 +114,7 @@
       "password_reset_desc": "ログイン時のパスワードを忘れた際に、ユーザー自身がパスワードを再設定できます。",
       "email_authentication": "ユーザー登録時のメール認証",
       "enable_email_authentication": "メール認証を有効にする",
-      "enable_email_authentication_desc": "ユーザー登録時にメール認証を行います。",
-      "need_complete_mail_setting_warning": "以下の機能を使えるようにするには、メール設定を完了させてください。"
+      "enable_email_authentication_desc": "ユーザー登録時にメール認証を行います。"
     },
     "ldap": {
       "enable_ldap": "LDAP を有効にする",

packages/app/public/static/locales/zh_CN/admin.json

@@ -114,8 +114,7 @@
       "password_reset_desc": "忘记密码时，用户可以自行重置",
       "email_authentication": "用户注册时的电子邮件身份验证",
       "enable_email_authentication": "启用电子邮件身份验证",
-      "enable_email_authentication_desc": "用户注册将执行电子邮件身份验证。",
-      "need_complete_mail_setting_warning": "要使用以下功能，请完成邮件设置。"
+      "enable_email_authentication_desc": "用户注册将执行电子邮件身份验证。"
 		},
 		"ldap": {
 			"enable_ldap": "Enable LDAP",

packages/app/src/components/Admin/Security/LocalSecuritySettingContents.jsx

@@ -52,17 +52,6 @@ class LocalSecuritySettingContents extends React.Component {
         )}
         <h2 className="alert-anchor border-bottom">{t('security_settings.Local.name')}</h2>
 
-        {!isMailerSetup && (
-          <div className="row">
-            <div className="col-12">
-              <div className="alert alert-danger">
-                <span>{t('security_settings.Local.need_complete_mail_setting_warning')}</span>
-                <a href="/admin/app#mail-settings"> <i className="fa fa-link"></i> {t('admin:app_setting.mail_settings')}</a>
-              </div>
-            </div>
-          </div>
-        )}
-
         {adminLocalSecurityContainer.state.useOnlyEnvVars && (
           <p
             className="alert alert-info"