[FIX] website_sale, website_crm : add missing import and remove useless

Fix: NameError: global name '_' is not defined

Related to odoo/odoo@4c66eae308

addons/website_crm/controllers/main.py

@@ -4,7 +4,7 @@
 import babel
 from datetime import datetime, timedelta
 
-from odoo import http
+from odoo import http, _
 from odoo.http import request
 
 from odoo.addons.website.controllers.backend import WebsiteBackend

addons/website_sale/controllers/backend.py

 # -*- coding: utf-8 -*-
-from odoo import http
+from odoo import http, _
 from odoo.http import request
-from dateutil.relativedelta import relativedelta
-from datetime import datetime, date, timedelta
-from math import floor
-import time
-import operator
+from datetime import datetime, timedelta
 import babel
 
 from odoo.addons.website.controllers.backend import WebsiteBackend
-from odoo.tools import DEFAULT_SERVER_DATETIME_FORMAT, DEFAULT_SERVER_DATE_FORMAT
+from odoo.tools import DEFAULT_SERVER_DATE_FORMAT
 
 
 class WebsiteSaleBackend(WebsiteBackend):