Merge pull request #66739 from islinwb/ipvs_mods_check

Automatic merge from submit-queue (batch tested with PRs 66489, 66728, 66739). 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 incomplete check of ipvs modules in hack/local-up-cluster.sh

**What this PR does / why we need it**:
Currently `hack/local-up-cluster.sh` executes `sudo modprobe -a ip_vs ip_vs_rr ip_vs_wrr ip_vs_sh nf_conntrack_ipv4` to check whether the ipvs required modules exist, which leaves out the scenario https://github.com/kubernetes/kubernetes/issues/63801 mentioned.
Since `func CanUseIPVSProxier` in  `pkg/proxy/ipvs/proxier.go` covers all scenarios, maybe we should just remove this part instead of adding codes.

**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
```

hack/local-up-cluster.sh

@@ -126,16 +126,6 @@ if [ "${CLOUD_PROVIDER}" == "openstack" ]; then
     fi
 fi
 
-# load required kernel modules if proxy mode is set to "ipvs".
-if [ "${KUBE_PROXY_MODE}" == "ipvs" ]; then
-    # If required kernel modules are not available, fall back to iptables.
-    sudo modprobe -a ip_vs ip_vs_rr ip_vs_wrr ip_vs_sh nf_conntrack_ipv4
-    if [[ $? -ne 0 ]]; then
-      echo "Required kernel modules for ipvs not found. Falling back to iptables mode."
-      KUBE_PROXY_MODE=iptables
-    fi
-fi
-
 # set feature gates if enable Pod priority and preemption
 if [ "${ENABLE_POD_PRIORITY_PREEMPTION}" == true ]; then
     FEATURE_GATES="$FEATURE_GATES,PodPriority=true"