RFR: 8368724: RISC-V: Remove AvoidUnalignedAccesses Flag [v7]

[Anjian Wen]

On Sat, 18 Oct 2025 08:32:48 GMT, Fei Yang <fyang at openjdk.org> wrote:

>> This AvoidUnalignedAccesses Flag is defined in ARCH_FLAGS, I think it will only affect riscv arch. and after using the alternative flag !UseUnalignedAccesses, it seems there is no need for it in the hotspot/cpu/riscv, we can hold on for a while to wait for others comments.
>> 
>> besides, I have  test-tier1 tests passed with or without deleting this  : )
>
> AFAIK, you need a CSR when removing a product flag.

@RealFYang Thanks，Already added a CSR issue for the flag remove

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PR Review Comment: https://git.openjdk.org/jdk/pull/27510#discussion_r2443741551