Fix: Remove linker settings from Package.swift

[brustolin]

📜 Description

Removes C++ and Z linker settings from Package.swift.
It seems this is not necessary since it don't break the build for Xcode 14,
also this will be necessary for Xcode 15.

💡 Motivation and Context

closes #3122

💚 How did you test it?

📝 Checklist

You have to check all boxes before merging:

• I reviewed the submitted code.
• I added tests to verify the changes.
• No new PII added or SDK only sends newly added PII if sendDefaultPII is enabled.
• I updated the docs if needed.
• Review from the native team if needed.
• No breaking change or entry added to the changelog.
• No breaking change for hybrid SDKs or communicated to hybrid SDKs.

🔮 Next steps

[armcknight]

LGTM!