[ML] Fix assertion for delete ingest pipelines api

[qn895]

Summary

This PR fixes commented code in delete ingest pipelines api in ML test services.

Checklist

Delete any items that are not applicable to this PR.

• Any text added follows EUI's writing guidelines, uses sentence case text and includes i18n support
• Documentation was added for features that require explanation or tutorials
• Unit or functional tests were updated or added to match the most common scenarios
• Any UI touched in this PR is usable by keyboard only (learn more about keyboard accessibility)
• Any UI touched in this PR does not create any new axe failures (run axe in browser: FF, Chrome)
• If a plugin configuration key changed, check if it needs to be allowlisted in the cloud and added to the docker list
• This renders correctly on smaller devices using a responsive layout. (You can test this in your browser)
• This was checked for cross-browser compatibility

[elasticmachine]

Pinging @elastic/ml-ui (:ml)

[kibana-ci]

💚 Build Succeeded

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• Commit: 1c22d8e

Metrics [docs]

✅ unchanged

To update your PR or re-run it, just comment with:
@elasticmachine merge upstream

cc @qn895

[peteharverson]

Code LGTM

[alvarezmelissa87]

LGTM ⚡

[kibanamachine]

💔 All backports failed

Status	Branch	Result
❌	8.10	Backport failed because of merge conflicts You might need to backport the following PRs to 8.10: - [ML] Data Frame Analytics trained models: adds functional tests for 'Deploy Model' action (#163886)

Manual backport

To create the backport manually run:

node scripts/backport --pr 167451

Questions ?

Please refer to the Backport tool documentation

[kibanamachine]

Friendly reminder: Looks like this PR hasn’t been backported yet.
To create automatically backports add the label auto-backport or prevent reminders by adding the backport:skip label.
You can also create backports manually by running node scripts/backport --pr 167451 locally

[kibanamachine]

Friendly reminder: Looks like this PR hasn’t been backported yet.
To create automatically backports add the label auto-backport or prevent reminders by adding the backport:skip label.
You can also create backports manually by running node scripts/backport --pr 167451 locally

[kibanamachine]

Friendly reminder: Looks like this PR hasn’t been backported yet.
To create automatically backports add the label auto-backport or prevent reminders by adding the backport:skip label.
You can also create backports manually by running node scripts/backport --pr 167451 locally