### 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, Collections.singletonList(check))
        );
        assertThat(e.getMessage(), containsString("max file descriptors"));
        maxFileDescriptorCount.set(randomIntBetween(limit + 1, Integer.MAX_VALUE));
        BootstrapChecks.check(emptyContext, true, Collections.singletonList(check));
        
        
        maxFileDescriptorCount.set(-1);
        BootstrapChecks.check(emptyContext, true, Collections.singletonList(check));
    }
    public void testFileDescriptorLimitsThrowsOnInvalidLimit() {
        final IllegalArgumentException e = expectThrows(
            IllegalArgumentException.class,
            () -> new BootstrapChecks.FileDescriptorCheck(-randomIntBetween(0, Integer.MAX_VALUE))
        );
        assertThat(e.getMessage(), containsString("limit must be positive but was"));
    }
    public void testMlockallCheck() throws NodeValidationException {
        class MlockallCheckTestCase {
            private final boolean mlockallSet;
            private final boolean isMemoryLocked;
            private final boolean shouldFail;
            MlockallCheckTestCase(final boolean mlockallSet, final boolean isMemoryLocked, final boolean shouldFail) {
                this.mlockallSet = mlockallSet;
                this.isMemoryLocked = isMemoryLocked;