Revert set -e for boot script

Upstream broke the spamassassin rules, which caused
sa-update to fail and the whole mail server to fail
as well. So we relax the error handling here and want
a working mail server primarily, with or without
spam lists.

boot.d/spamassasin

@@ -1,7 +1,5 @@
 #!/bin/bash
 
-set -e
-
 sa-update
 
 razor-admin -home=/etc/mail/spamassassin/.razor -register