### 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
final NodeValidationException e = expectThrows(
            NodeValidationException.class,
            () -> BootstrapChecks.check(emptyContext, true, checks)
        );
        assertThat(
            e,
            hasToString(
                allOf(
                    containsString("[2] bootstrap checks failed"),
                    containsString("You must address the points described in the following [2] lines before starting Elasticsearch"),
                    containsString("bootstrap check failure [1] of [2]:"),
                    containsString("first"),
                    containsString("bootstrap check failure [2] of [2]:"),
                    containsString("second")
                )
            )
        );
        final Throwable[] suppressed = e.getSuppressed();
        assertThat(suppressed.length, equalTo(2));
        assertThat(suppressed[0], instanceOf(IllegalStateException.class));
        assertThat(suppressed[0], hasToString(containsString("first")));
        assertThat(suppressed[1], instanceOf(IllegalStateException.class));
        assertThat(suppressed[1], hasToString(containsString("second")));
    }
    public void testHeapSizeCheck() throws NodeValidationException {
        final int initial = randomIntBetween(0, Integer.MAX_VALUE - 1);
        final int max = randomIntBetween(initial + 1, Integer.MAX_VALUE);
        final AtomicLong initialHeapSize = new AtomicLong(initial);
        final AtomicLong maxHeapSize = new AtomicLong(max);
        final boolean isMemoryLocked = randomBoolean();