RFR: 8340120: Remove redundant code in SegmentBulkOperations::mismatch

[Per Minborg]

On Fri, 13 Sep 2024 13:02:05 GMT, Per Minborg <pminborg at openjdk.org> wrote:

> This PR fixes a build error where we addressed out of bounds.

This title has been changed as this code segment was never invoked. So, we could not add a test that touches the code. Also, this will not fix any out-of-bounds addressing but will only reduce the code surface.

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PR Comment: https://git.openjdk.org/jdk/pull/20998#issuecomment-2349035087