### 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
() -> { BootstrapChecks.check(emptyContext, true, checks); }
        );
        assertThat(
            e.getMessage(),
            containsString("Java version [" + javaVersion.get() + "] is an early-access build, only use release builds")
        );
        
        javaVersion.set(randomFrom("1.8.0_152", "9"));
        BootstrapChecks.check(emptyContext, true, checks);
    }
    public void testAllPermissionCheck() throws NodeValidationException {
        final AtomicBoolean isAllPermissionGranted = new AtomicBoolean(true);
        final BootstrapChecks.AllPermissionCheck allPermissionCheck = new BootstrapChecks.AllPermissionCheck() {
            @Override
            boolean isAllPermissionGranted() {
                return isAllPermissionGranted.get();
            }
        };
        final List<BootstrapCheck> checks = Collections.singletonList(allPermissionCheck);
        final NodeValidationException e = expectThrows(
            NodeValidationException.class,
            () -> BootstrapChecks.check(emptyContext, true, checks)
        );
        assertThat(e, hasToString(containsString("granting the all permission effectively disables security")));
        
        isAllPermissionGranted.set(false);
        BootstrapChecks.check(emptyContext, true, checks);
    }
    public void testAlwaysEnforcedChecks() {
        final BootstrapCheck check = new BootstrapCheck() {