Publish native symbols in all DCs by gleocadie · Pull Request #7828 · DataDog/dd-trace-dotnet

@bouwkast

## Summary of changes

These were removed from the reusable workflow in
#7828, but didn't get
removed from these.

## Reason for change

They were broken and GitHub said:

```
The workflow is not valid. .github/workflows/create_normal_draft_release.yml (Line: 40, Col: 33): Invalid secret, DD_PREPROD_API_KEY is not defined in the referenced workflow. .github/workflows/create_normal_draft_release.yml (Line: 41, Col: 39): Invalid secret, DD_PUBLIC_SYMBOL_API_KEY is not defined in the referenced workflow.
```

## Implementation details

Deleted them

## Test coverage

Can try them out next time 😄 

## Other details
<!-- Fixes #{issue} -->

We still have our old release script which doesn't have the issue

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