remove release notes section

content/en/docs/concepts/scheduling-eviction/scheduling-framework.md

@@ -78,7 +78,7 @@ called for that node. Nodes may be evaluated concurrently.
 ### PostFilter {#post-filter}
 
 These plugins are called after Filter phase, but only when no feasible nodes
-were found for the node. Plugins are called called in their configured order. If
+were found for the node. Plugins are called in their configured order. If
 any postFilter plugin marks the node as `Schedulable`, the remaining plugins
 will not be called. A typical PostFilter implementation is preemption, which
 tries to make the pod schedulable by preempting other Pods.

content/en/docs/reference/scheduling/config.md

@@ -232,24 +232,6 @@ the same configuration parameters (if applicable). This is because the scheduler
 only has one pending pods queue.
 {{< /note >}}
 
-## Upgrading from `v1alpha2` to `v1beta1` {#beta-changes}
-
-When migrating from `kubescheduler.config.k8s.io/v1alpha2` to `kubescheduler.config.k8s.io/v1beta1`,
-beware of the following changes, if applicable:
-
-- `.bindTimeoutSeconds` was moved as part of plugin args for `VolumeBinding`,
-  which can be configured separately per [profile](#profiles).
-- `.extenders` are updated to satisfy API standards. In particular:
-  - `.extenders` decoding is case sensitive. All fields are affected.
-  - `.extenders[*].httpTimeout` is of type `metav1.Duration`.
-  - `.extenders[*].enableHttps` is renamed to `.extenders[*].enableHTTPS`.
-- `RequestedToCapacityRatio` args decoding is case sensitive. All fields are affected.
-- `DefaultPodTopologySpread` [plugin](#scheduling-plugins) is renamed to `SelectorSpread`.
-- `Unreserve` extension point is removed from Profile definition. All `Reserve`
-  plugins implement an `Unreserve` call.
-- `.disablePreemption` was removed. Users can disable preemption by disabling the
-  "DefaultPreemption" PostFilter plugin.
-
 ## {{% heading "whatsnext" %}}
 
 * Read the [kube-scheduler reference](https://kubernetes.io/docs/reference/command-line-tools-reference/kube-scheduler/)