删除多余的模块导入

Signed-off-by: Binren Zhnag <zhangbr@elab-plus.com>

email_util.py

@@ -1,7 +1,7 @@
 # coding=utf-8
 from email.mime.text import MIMEText
 from email.header import Header
-from smtplib import SMTP, SMTP_SSL
+from smtplib import SMTP
 from email.mime.multipart import MIMEMultipart
 from email.mime.base import MIMEBase
 from email.encoders import encode_base64
@@ -10,6 +10,7 @@ import os
 
 # https://blog.csdn.net/chuxu8314/article/details/100618710
 
+
 class EmailUtil(object):
     host_server = 'smtp.qq.com'
     sender_email = '1285211525@qq.com'