⚠️ Cleanup old function from e2e test framework and helpers

[fabriziopandini]

What this PR does / why we need it:
This PR removes functions from the e2e test framework and helpers that should not be necessary anymore for the projects switched to using clusterctl utils for tests

#Which issue(s) this PR fixes:
Rif #3689

/assign @vincepri
/milestone v0.4.0

/hold
while doing a double check on the codebase of few providers
FYI @randomvariable @yastij @nader-ziada

[k8s-ci-robot]

@fabriziopandini: The following test failed, say /retest to rerun all failed tests:

Test name	Commit	Details	Rerun command
pull-cluster-api-apidiff-main	d2ff718	link	/test pull-cluster-api-apidiff-main

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[fabriziopandini]

/cc @CecileRobertMichon

[benmoss]

/lgtm

[fabriziopandini]

Additional PRs in CAPA:

• 🌱 Remove the integration test cluster-api-provider-aws#2012
• Remove CAPA integration test kubernetes/test-infra#19464

[fabriziopandini]

None of the func being deleted in this PR is used in CAPV

[fabriziopandini]

Additional PRs in CAPZ

• Remove the integration test cluster-api-provider-azure#979
• Remove CAPZ integration test kubernetes/test-infra#19465

[fabriziopandini]

api diff

sigs.k8s.io/cluster-api/test/helpers/kind
  - Cluster: removed
sigs.k8s.io/cluster-api/test/framework/generators
  - CertManager: removed
  - ClusterAPI: removed
  - ClusterAPIGitHubManifestsFormat: removed
  - KubeadmBootstrap: removed
  - KubeadmBootstrapGitHubManifestsFormat: removed
  - KubeadmControlPlane: removed
  - KubeadmControlPlaneGitHubManifestsFormat: removed
sigs.k8s.io/cluster-api/test/helpers/flag
  - DefineOrLookupStringFlag: removed
sigs.k8s.io/cluster-api/test/helpers/components
  - CAPIVersion: removed
  - DeployCAPIComponents: removed
  - WaitDeployment: removed
sigs.k8s.io/cluster-api/test/helpers/scheme
  - SetupScheme: removed

[randomvariable]

lgtm for capa, given kubernetes-sigs/cluster-api-provider-aws#2012

[cpanato]

/lgtm
/hold for others to review

[yastij]

/lgtm

[vincepri]

/approve
/hold cancel

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: vincepri

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