fix: remove netem distribution normal

[aymericDD]

What does this PR do?

• Adds new functionality
• Alters existing functionality
• Fixes a bug
• Improves documentation or testing

Please briefly describe your changes as well as the motivation behind them:

• The netem tool creates soft locks that blocks the CPU of the node where the disruption is applied.

Code Quality Checklist

• The documentation is up to date.
• My code is sufficiently commented and passes continuous integration checks.
• I have signed my commit (see Contributing Docs).

Testing

• I leveraged continuous integration testing
  • by depending on existing unit tests or end-to-end tests.
  • by adding new unit tests or end-to-end tests.
• I manually tested the following steps:
  • x
  • locally.
  • as a canary deployment to a cluster.

[datadog-datadog-prod-us1]

Datadog Report

Branch report: fix/incident-23130
Commit report: 22be7f5

✅ chaos-controller: 0 Failed, 0 New Flaky, 642 Passed, 0 Skipped, 24.05s Wall Time