🌱 Remove previously deprecated --metrics-bind-addr flag

[Sunnatillo]

Removes MetricsBindAddr flag

What this PR does / why we need it:
follows : https://github.com/kubernetes-sigs/cluster-api/tree/main/docs/release/role-handbooks/release-lead#track-remove-previously-deprecated-code

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Part of #11092
Edit:
Fixes: #10937

/area util

[sbueringer]

Thx, one nit

[sbueringer]

Last nit from my side

/assign @fabriziopandini @chrischdi

[k8s-ci-robot]

@Sunnatillo: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-cluster-api-apidiff-main	6e02691	link	false	/test pull-cluster-api-apidiff-main

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository. I understand the commands that are listed here.

[sbueringer]

Thx!

/test pull-cluster-api-e2e-blocking-main

/lgtm

I'll give folks a bit of time to review. If nobody gets around to it, feel free to ping me next week and I'll approve.

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: c7e603a5514e9da426a821cff296ec83c8fa58cb

[fabriziopandini]

Thanks for this PR!
/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: fabriziopandini

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [fabriziopandini]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment