racoon: remove domain_deprecated attribute

Test: builds/boots on Angler. No "granted" messages for the removed
permissions observed in three months of log audits.

Bug: 28760354
Change-Id: Ib6da57f6249a5571015b649bae843590229be714

public/racoon.te

 # IKE key management daemon
-type racoon, domain, domain_deprecated;
+type racoon, domain;
 type racoon_exec, exec_type, file_type;
 
 typeattribute racoon mlstrustedsubject;