Merge pull request #56675 from stewart-yu/removeUnnecessaryCondition

Automatic merge from submit-queue (batch tested with PRs 56480, 56675, 56624, 56648, 56658). 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 unnecessary condition

**What this PR does / why we need it**:
Now that we have judgement `loadbalancer == nil` in `L1286`, the condition is uncessary.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```

Author: Kubernetes Submit Queue

pkg/cloudprovider/providers/openstack/openstack_loadbalancer.go

@@ -1341,7 +1341,7 @@ func (lbaas *LbaasV2) EnsureLoadBalancerDeleted(clusterName string, service *v1.
 		return nil
 	}
 
-	if loadbalancer != nil && loadbalancer.VipPortID != "" {
+	if loadbalancer.VipPortID != "" {
 		portID := loadbalancer.VipPortID
 		floatingIP, err := getFloatingIPByPortID(lbaas.network, portID)
 		if err != nil && err != ErrNotFound {