CLOUDP-272416: Remove datalake tests

[blva]

Proposed changes

Jira ticket: CLOUDP-272416

Checklist

• I have signed the MongoDB CLA
• I have added tests that prove my fix is effective or that my feature works
• I have added any necessary documentation in document requirements section listed in CONTRIBUTING.md (if appropriate)
• I have addressed the @mongodb/docs-cloud-team comments (if appropriate)
• I have updated test/README.md (if an e2e test has been added)
• I have run make fmt and formatted my code

Further comments

[gssbzn]

Let's do the deprecation please, specially since we'll release this week

[blva]

@gssbzn covering deprecation in the deprecation task and fixing the test failures here.

[blva]

also: currently

➜  mongodb-atlas-cli git:(master) ./bin/atlas datalake
Command "dataLakes" is deprecated, Please use 'atlas datafederation'
The datalakes command provides access to your project data lakes. You can create, edit, and delete data lakes.

Usage:

[gssbzn]

/bin/atlas datalake

that's datalake which is actually atlas dataFederation, you need to deprecate atlas dataLakePipelines

[gssbzn]

LGTM

[github-actions]

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