MINOR: [C++][Acero] Replace acero-specific append avx2 cmake macro with generic one

[zanmato1984]

Rationale for this change

Macro append_acero_runtime_avx2_src is duplicated with generic append_runtime_avx2_src.

What changes are included in this PR?

Remove append_acero_runtime_avx2_src and replace it with append_runtime_avx2_src.

Are these changes tested?

CI should be enough.

Are there any user-facing changes?

None.

[github-actions]

Thanks for opening a pull request!

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or

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See also:

• Other pull requests
• Contribution Guidelines - Contributing Overview

[zanmato1984]

Hi @kou @pitrou , would you mind to take a look? Thanks.

[zanmato1984]

I assume cmake-only changes can be a minor PR. If I'm wrong, please let me known and I will file an issue for it. Thanks.

[pitrou]

@github-actions crossbow submit -g cpp

[pitrou]

+1, let's just ensure this doesn't break CI builds

[github-actions]

Revision: 2f1d594

Submitted crossbow builds: ursacomputing/crossbow @ actions-cf5eb235b2

Task	Status
example-cpp-minimal-build-static
example-cpp-minimal-build-static-system-dependency
example-cpp-tutorial
test-alpine-linux-cpp
test-build-cpp-fuzz
test-conda-cpp
test-conda-cpp-valgrind
test-cuda-cpp-ubuntu-20.04-cuda-11.2.2
test-cuda-cpp-ubuntu-22.04-cuda-11.7.1
test-debian-12-cpp-amd64
test-debian-12-cpp-i386
test-fedora-39-cpp
test-ubuntu-20.04-cpp
test-ubuntu-20.04-cpp-bundled
test-ubuntu-20.04-cpp-minimal-with-formats
test-ubuntu-22.04-cpp
test-ubuntu-22.04-cpp-20
test-ubuntu-22.04-cpp-emscripten
test-ubuntu-22.04-cpp-no-threading
test-ubuntu-24.04-cpp
test-ubuntu-24.04-cpp-gcc-13-bundled
test-ubuntu-24.04-cpp-gcc-14
test-ubuntu-24.04-cpp-thread-sanitizer

[conbench-apache-arrow]

After merging your PR, Conbench analyzed the 4 benchmarking runs that have been run so far on merge-commit a576421.

There were no benchmark performance regressions. 🎉

The full Conbench report has more details. It also includes information about 4 possible false positives for unstable benchmarks that are known to sometimes produce them.