remove initialize button

resource/locales/en_US/admin/admin.json

@@ -32,7 +32,6 @@
     "host": "Host",
     "port": "Port",
     "user": "User",
-    "initialize_mail_settings": "initialize e-mail settings",
     "ses_settings":"SES settings",
     "aws_settings": "AWS settings",
     "aws_access": "This is for AWS settings. If you complete AWS settings, file upload function, profile picture function etc will be enabled.",

resource/locales/ja_JP/admin/admin.json

@@ -32,7 +32,6 @@
     "host": "ホスト",
     "port": "ポート",
     "user": "ユーザー",
-    "initialize_mail_settings": "設定を初期化",
     "ses_settings":"SES設定",
     "aws_settings": "AWS設定",
     "aws_access": "AWS にアクセスするための設定を行います。AWS の設定を完了させると、ファイルアップロード機能、プロフィール写真機能などが有効になります。",

resource/locales/zh_CN/admin/admin.json

@@ -32,7 +32,6 @@
 		"host": "服务器",
 		"port": "端口号",
 		"user": "用户名",
-    "initialize_mail_settings": "重置邮件设置",
     "ses_settings":"SES设置",
 		"aws_settings": "AWS设置",
 		"aws_access": "这是用于AWS设置的。如果您完成了AWS设置，文件上传功能，个人资料图片功能等将被启用。",

src/client/js/components/Admin/App/SmtpSetting.jsx

@@ -77,22 +77,13 @@ function SmtpSetting(props) {
         </div>
 
         <div className="row my-3">
-          <div className="offset-5">
+          <div className="mx-auto">
             <button type="button" className="btn btn-primary" onClick={submitHandler} disabled={adminAppContainer.state.retrieveError != null}>
               { t('Update') }
             </button>
           </div>
-          <div className="offset-1">
-            <button
-              type="button"
-              className="btn btn-secondary"
-              onClick={openInitializeValueModal}
-              disabled={adminAppContainer.state.retrieveError != null}
-            >
-              {t('admin:app_setting.initialize_mail_settings')}
-            </button>
-          </div>
         </div>
+
       </div>
 
     </React.Fragment>