- Removed the GA feature gate `RemoveSelfLink`.
   ([#122468](https://github.com/kubernetes/kubernetes/pull/122468), [@carlory](https://github.com/carlory))
- Removed the generally available feature gate `ExpandedDNSConfig`.
   ([#122086](https://github.com/kubernetes/kubernetes/pull/122086), [@bzsuni](https://github.com/bzsuni))

    assertTrue(getMap().remove(k0(), v0()));
    expectMissing(e0());
  }

  @MapFeature.Require(SUPPORTS_REMOVE)
  public void testRemove_supportedPresentKeyWrongValue() {
    assertFalse(getMap().remove(k0(), v3()));
    expectUnchanged();
  }

  @MapFeature.Require(SUPPORTS_REMOVE)
  public void testRemove_supportedWrongKeyPresentValue() {
    assertFalse(getMap().remove(k3(), v0()));
    expectUnchanged();
  }

  @CollectionSize.Require(absent = ZERO)
  public void testRemoveKeyRemovesFromInverse() {
    getMap().remove(k0());
    expectMissing(e0());
  }

  @MapFeature.Require(SUPPORTS_REMOVE)
  @CollectionSize.Require(absent = ZERO)
  public void testRemoveKeyFromKeySetRemovesFromInverse() {
    getMap().keySet().remove(k0());
    expectMissing(e0());
  }

  @MapFeature.Require(SUPPORTS_REMOVE)

* The following deprecated flags were removed from `kubelet`:

  * `api-servers` - add apiserver addresses to the kubeconfig file instead.

  Don't use these flags. Using deprecated flags causes the kubelet to print a warning. Using a removed flag causes the kubelet to abort the startup.

   * class, we use a suboptimal int[] representation to avoid introducing a new type that can impede
   * class-unloading when ThreadLocals are not removed.
   */
  static final ThreadLocal<int @Nullable []> threadHashCode = new ThreadLocal<>();

  /** Generator of new random hash codes */
  static final Random rng = new Random();

      while (openClientSocket.hasNext()) {
        openClientSocket.next().closeQuietly()
        openClientSocket.remove()
      }

      val httpConnection = openConnections.iterator()
      while (httpConnection.hasNext()) {
        httpConnection.next().closeQuietly()
        httpConnection.remove()
      }
      dispatcher.close()
    }
  }

  @Throws(Exception::class)

## Action Required

- etcd2 as a backend is deprecated and support will be removed in Kubernetes 1.13.

      putNext(this, next);
    }

    void unpark() {
      // This is racy with removeWaiter. The consequence of the race is that we may spuriously call
      // unpark even though the thread has already removed itself from the list. But even if we did
      // use a CAS, that race would still exist (it would just be ever so slightly smaller).
      Thread w = thread;
      if (w != null) {
        thread = null;

        count++;
        return sessionCountId;
    }

    /**
     * Removes a stored crawling configuration from the session-based storage.
     *
     * @param sessionCountId the session count ID of the configuration to remove
     */
    public void remove(final String sessionCountId) {
        crawlingConfigMap.remove(sessionCountId);
    }

    /**

      putNext(this, next);
    }

    void unpark() {
      // This is racy with removeWaiter. The consequence of the race is that we may spuriously call
      // unpark even though the thread has already removed itself from the list. But even if we did
      // use a CAS, that race would still exist (it would just be ever so slightly smaller).
      Thread w = thread;
      if (w != null) {
        thread = null;