Azure: Fix missing ECS fields

[orestisfl]

Summary of your changes

This removes the elastic common data return values since they conflict with the data provider. Base reason is because of mapstr, here's a minimal example:

event := beat.Event{Fields: map[string]any{}}
_, _ = event.PutValue("cloud.account.id", "123")
_, _ = event.PutValue("cloud", map[string]any{})
fmt.Println(event.GetValue("cloud.account.id")) // prints error: key not found

The second call to PutValue replaces everything under cloud. including the existing values in cloud.acount.id.

Screenshot/Data

Related Issues

Fixes #1609

Checklist

• I have added tests that prove my fix is effective or that my feature works
• I have added the necessary README/documentation (if appropriate)

[github-actions]

📊 Allure Report - 💚 No failures were reported.

Result	Count
🟥 Failed	0
🟩 Passed	39
⬜ Skipped	1