Make security rules optional (revert #97191) (#98854)

x-pack/plugins/fleet/common/constants/epm.ts

@@ -16,7 +16,6 @@ export const requiredPackages = {
   Endpoint: 'endpoint',
   ElasticAgent: 'elastic_agent',
   FleetServer: FLEET_SERVER_PACKAGE,
-  SecurityDetectionEngine: 'security_detection_engine',
 } as const;
 
 // these are currently identical. we can separate if they later diverge

x-pack/test/fleet_api_integration/apis/fleet_setup.ts

@@ -75,13 +75,7 @@ export default function (providerContext: FtrProviderContext) {
         .map((p: any) => p.name)
         .sort();
 
-      expect(installedPackages).to.eql([
-        'elastic_agent',
-        'endpoint',
-        'fleet_server',
-        'security_detection_engine',
-        'system',
-      ]);
+      expect(installedPackages).to.eql(['elastic_agent', 'endpoint', 'fleet_server', 'system']);
     });
   });
 }