revert(kuma-cp): do not use additional addresses (backport of #11601)

[kumahq]

Automatic cherry-pick of #11601 for branch release-2.5

Generated by action

cherry-picked commit 2059970
⚠️ ⚠️ ⚠️ Conflicts happened when cherry-picking! ⚠️ ⚠️ ⚠️

On branch release-2.5
Your branch is up to date with 'origin/release-2.5'.

You are currently cherry-picking commit 205997054.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	both modified:   pkg/xds/generator/outbound_proxy_generator.go
	deleted by us:   pkg/xds/generator/testdata/outbound-proxy/10.envoy.golden.yaml

no changes added to commit (use "git add" and/or "git commit -a")

[lukidzi]

not impacted