Merge pull request #62513 from gyliu513/ipvs-beta

Automatic merge from submit-queue. 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>.

Do not need to set SupportIPVSProxyMode after 1.10.

**What this PR does / why we need it**:

**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
```

`SupportIPVSProxyMode` is `true` by default since 1.10, there is no need to set it explicitly any more.

/area ipvs

/cc @m1093782566

pkg/proxy/ipvs/README.md

@@ -285,7 +285,6 @@ apiVersion: kubeadm.k8s.io/v1alpha1
 ...
 kubeProxy:
   config:
-    featureGates: SupportIPVSProxyMode=true
     mode: ipvs
 ...
 ```