[Rspamd] More explicit Sendgrid ID checking

data/conf/rspamd/local.d/multimap.conf

@@ -155,10 +155,3 @@ SMTP_LIMITED_ACCESS {
   map = "redis://SMTP_LIMITED_ACCESS";
   symbols_set = ["SMTP_LIMITED_ACCESS"];
 }
-
-SENDGRID_INVALUEMENT_BAD_SENDER {
-  type = "selector";
-  map = "https://www.invaluement.com/spdata/sendgrid-id-dnsbl.txt";
-  selector = 'from("smtp","orig").regexp("/^<?bounces\+(\d+)\-[^@]+@sendgrid.net>?$/i").last';
-  score = 8.0;
-}