Use build runtime for running thirdparty checks

Author: breskeby

buildSrc/src/main/java/org/elasticsearch/gradle/precommit/ThirdPartyAuditPrecommitPlugin.java

@@ -58,7 +58,6 @@ public TaskProvider<? extends Task> createTask(Project project) {
         TaskProvider<ThirdPartyAuditTask> audit = project.getTasks().register("thirdPartyAudit", ThirdPartyAuditTask.class);
         audit.configure(t -> {
             t.dependsOn(resourcesTask);
-            t.setJavaHome(BuildParams.getRuntimeJavaHome().toString());
             t.getTargetCompatibility().set(project.provider(BuildParams::getRuntimeJavaVersion));
             t.setSignatureFile(resourcesDir.resolve("forbidden/third-party-audit.txt").toFile());
         });