Remove the ArrayDeque.subList().subList() test for comodification detection.
For types that extend AbstractList and to not override subList function,
the behavior varies depending on JDK version. With JKD8, the test fails for ArrayDeque.
While with JDK9+, it passes.
Modification registration seems to changed in Java 9. Now if the asked
capacity in `ensureCapacity` function is less than current capacity,
no modification is registered.