Strip nextLink from validation emails

sydent/http/servlets/emailservlet.py

@@ -88,8 +88,6 @@ class EmailRequestCodeServlet(Resource):
         brand = self.sydent.brand_from_request(request)
 
         nextLink: Optional[str] = None
-        if "next_link" in args and not args["next_link"].startswith("file:///"):
-            nextLink = args["next_link"]
 
         try:
             sid = self.sydent.validators.email.requestToken(