[8.x](backport #41109) Revert "[AWS Cloudwatch] Fix Tags for APIGW"

[mergify]

Reverts #40755 because since that PR was merged, we're seeing the https://buildkite.com/elastic/beats-packaging-pipeline consistently failing like so when it tries to run mage package on Agentbeat:

# github.com/elastic/beats/v7/x-pack/agentbeat
/usr/local/go/pkg/tool/linux_amd64/link: running aarch64-linux-gnu-gcc failed: exit status 1
/usr/lib/gcc-cross/aarch64-linux-gnu/6/../../../../aarch64-linux-gnu/bin/ld.gold: internal error in maybe_apply_stub, at ../../gold/aarch64.cc:5407
collect2: error: ld returned 1 exit status
Error: running "go build -o build/golang-crossbuild/agentbeat-linux-arm64 -buildmode pie -gcflags=all=-N -l -tags=agentbeat -ldflags -X github.com/elastic/beats/v7/libbeat/version.buildTime=2024-10-03T12:37:52Z -X github.com/elastic/beats/v7/libbeat/version.commit=698951e8c895eff9d03a8d0ececadba3b8b4c6bb" failed with exit code 1
```<hr>This is an automatic backport of pull request #41109 done by [Mergify](https://mergify.com).

[botelastic]

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