Merge pull request #38224 from Shubham82/remove_ref

Removed Reference from the removed Feature Gates.

Author: k8s-ci-robot

content/en/docs/concepts/policy/pid-limiting.md

@@ -73,13 +73,6 @@ The value you specified declares that the specified number of process IDs will
 be reserved for the system as a whole and for Kubernetes system daemons
 respectively.
 
-{{< note >}}
-Before Kubernetes version 1.20, PID resource limiting with Node-level
-reservations required enabling the [feature
-gate](/docs/reference/command-line-tools-reference/feature-gates/)
-`SupportNodePidsLimit` to work.
-{{< /note >}}
-
 ## Pod PID limits
 
 Kubernetes allows you to limit the number of processes running in a Pod. You
@@ -89,12 +82,6 @@ To configure the limit, you can specify the command line parameter `--pod-max-pi
 to the kubelet, or set `PodPidsLimit` in the kubelet
 [configuration file](/docs/tasks/administer-cluster/kubelet-config-file/).
 
-{{< note >}}
-Before Kubernetes version 1.20, PID resource limiting for Pods required enabling
-the [feature gate](/docs/reference/command-line-tools-reference/feature-gates/)
-`SupportPodPidsLimit` to work.
-{{< /note >}}
-
 ## PID based eviction
 
 You can configure kubelet to start terminating a Pod when it is misbehaving and consuming abnormal amount of resources.