RFR: 8345397: Remove <cstdio> from g1HeapRegionRemSet.cpp

[Kim Barrett]

On Tue, 3 Dec 2024 16:21:01 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

>> Please review this trivial removal of an unnecessary and improperly placed
>> include of `<cstdio>`.
>> 
>> Testing: mach5 tier1
>
> Good and trivial.

Thanks for reviewing @shipilev

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PR Comment: https://git.openjdk.org/jdk/pull/22519#issuecomment-2515033509