Automatic merge from submit-queue (batch tested with PRs 58547, 57228, 58528, 58499, 58618). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
Remove getOldSecurityGroupName() from OpenStack cloud provider
Related to #53764
The getOldSecurityGroupName() is used to get the old security
group name, we can remove it now.
**What this PR does / why we need it**:
#53764
**Release note**:
```release-note
NONE
```
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