RFR: 8278548: G1: Remove unnecessary check in forward_to_block_containing_addr [v2]

[Hamlin Li]

On Sat, 11 Dec 2021 14:56:37 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

>> Simple change of removing an always-false `if`.
>> 
>> Test: I added `assert(false)` inside the `if`, and no failure in tier1-6.
>
> Albert Mingkun Yang has updated the pull request incrementally with one additional commit since the last revision:
> 
>   review

looks good.

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Marked as reviewed by mli (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/6797