### Description

The [bootstrap checks docs for 8.1](https://github.com/elastic/elasticsearch/blob/8.1/docs/reference/setup/bootstrap-checks.asciidoc#system-call-filter-check) still have a [section for disabling system call filters](https://www.elastic.co/guide/en/elasticsearch/reference/8.1/_system_call_filter_check.html) even though that setting was removed in 8.0 (#72848) and its removal is [listed in the breaking changes](https://www.elastic.co/guide/en/elastic-stack/8.0/elasticsearch-breaking-changes.html)


server/src/test/java/org/elasticsearch/bootstrap/BootstrapChecksTests.java
isSystemCallFilterInstalled.set(true);
        disableMightFork.run();
        BootstrapChecks.check(emptyContext, true, Collections.singletonList(check));
        
        
        isSystemCallFilterInstalled.set(true);
        enableMightFork.run();
        final NodeValidationException e = expectThrows(
            NodeValidationException.class,
            () -> BootstrapChecks.check(emptyContext, randomBoolean(), Collections.singletonList(check))
        );
        consumer.accept(e);
    }
    public void testEarlyAccessCheck() throws NodeValidationException {
        final AtomicReference<String> javaVersion = new AtomicReference<>(randomFrom("1.8.0_152-ea", "9-ea"));
        final BootstrapChecks.EarlyAccessCheck eaCheck = new BootstrapChecks.EarlyAccessCheck() {
            @Override
            String jvmVendor() {
                return "Oracle Corporation";
            }
            @Override
            String javaVersion() {
                return javaVersion.get();
            }
        };
        final List<BootstrapCheck> checks = Collections.singletonList(eaCheck);
        final NodeValidationException e = expectThrows(
            NodeValidationException.class,