the mention of DynamicKubeletConfig is not needed any longer as the feature was removed

Author: SergeyKanzhelev

keps/NNNN-kep-template/README.md

@@ -470,7 +470,7 @@ well as the [existing list] of feature gates.
   - Will enabling / disabling the feature require downtime of the control
     plane?
   - Will enabling / disabling the feature require downtime or reprovisioning
-    of a node? (Do not assume `Dynamic Kubelet Config` feature is enabled).
+    of a node?
 
 ###### Does enabling the feature change any default behavior?