CM_Paging_ContentList_AbstractTest::testRemove randomly fails (due to `random` usage)

```
1) CM_Paging_ContentList_AbstractTest::testRemove
Failed asserting that Array &0 (
    0 => 'bar'
    1 => 'foo'
    2 => 'zoo'
) is identical to Array &0 (
    0 => 'bar'
    1 => 'foo'
).
```