HSEARCH-4997 Remove now unnecessary option when testing against Hiber…

…nate ORM 6.3.x-SNAPSHOT

IIRC the breaking change in hibernate-testing was released in 6.3.1, and
we already upgraded to that version.

ci/dependency-update/Jenkinsfile

@@ -15,8 +15,6 @@ Map settings() {
 			return [
 					updateProperties: ['version.org.hibernate.orm'],
 					onlyRunTestDependingOn: ['hibernate-search-mapper-orm'],
-					// we need to recompile this module since it has incompatible return type and will result in a build error:
-					additionalMavenArgs: '-pl :hibernate-search-util-internal-integrationtest-mapper-orm'
 			]
 		case 'orm6.4':
 			return [