### 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
Collections.shuffle(transportAddresses, random());
        when(boundTransportAddress.boundAddresses()).thenReturn(transportAddresses.toArray(new TransportAddress[0]));
        when(boundTransportAddress.publishAddress()).thenReturn(publishAddress);
        final String discoveryType = randomFrom(MULTI_NODE_DISCOVERY_TYPE, SINGLE_NODE_DISCOVERY_TYPE);
        assertEquals(
            BootstrapChecks.enforceLimits(boundTransportAddress, discoveryType),
            SINGLE_NODE_DISCOVERY_TYPE.equals(discoveryType) == false
        );
    }
    public void testEnforceLimitsWhenPublishingToNonLocalAddress() {
        final List<TransportAddress> transportAddresses = new ArrayList<>();
        for (int i = 0; i < randomIntBetween(1, 8); i++) {
            final TransportAddress randomTransportAddress = buildNewFakeTransportAddress();
            transportAddresses.add(randomTransportAddress);
        }
        final TransportAddress publishAddress = new TransportAddress(InetAddress.getLoopbackAddress(), 0);
        final BoundTransportAddress boundTransportAddress = mock(BoundTransportAddress.class);
        when(boundTransportAddress.boundAddresses()).thenReturn(transportAddresses.toArray(new TransportAddress[0]));
        when(boundTransportAddress.publishAddress()).thenReturn(publishAddress);
        final String discoveryType = randomFrom(MULTI_NODE_DISCOVERY_TYPE, SINGLE_NODE_DISCOVERY_TYPE);
        assertEquals(
            BootstrapChecks.enforceLimits(boundTransportAddress, discoveryType),
            SINGLE_NODE_DISCOVERY_TYPE.equals(discoveryType) == false
        );
    }
    public void testExceptionAggregation() {
        final List<BootstrapCheck> checks = Arrays.asList(
            context -> BootstrapCheck.BootstrapCheckResult.failure("first"),
            context -> BootstrapCheck.BootstrapCheckResult.failure("second")
        );