RFR: 8339346: GenShen: Remove even more stale TODOs

[Y. Srinivas Ramakrishna]

On Tue, 3 Sep 2024 23:14:50 GMT, Y. Srinivas Ramakrishna <ysr at openjdk.org> wrote:

>> Some of these have been done, some of these will not be done, some have been moved into our ticketing system, some of them are done in this PR.
>
> src/hotspot/share/gc/shenandoah/shenandoahScanRemembered.hpp line 785:
> 
>> 783:   void mark_range_as_dirty(size_t card_index, size_t num_cards);
>> 784:   void mark_card_as_clean(size_t card_index);
>> 785:   void mark_range_as_clean(size_t card_index, size_t num_cards);
> 
> Are these being removed because the "card_index" arg versions are never used, only the "heapword*" arg versions?

Can the "TODO:" at line 748 (old line 761) also be removed, or is there a good reason to keep it for now?

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PR Review Comment: https://git.openjdk.org/shenandoah/pull/491#discussion_r1742802422