Remove 4.4.1.4 Update the ICE gathering state

webrtc.html

@@ -1604,63 +1604,6 @@ <h4>
               </li>
             </ol>
           </section>
-          <section>
-            <h4>
-              Update the ICE gathering state
-            </h4>
-            <p>
-              To <dfn class="abstract-op" id="update-ice-gathering-state">update the ICE
-              gathering state</dfn> of an {{RTCPeerConnection}} instance
-              <var>connection</var>, the user agent MUST queue a task that runs
-              the following steps:
-            </p>
-            <ol class=algorithm>
-              <li>
-                <p>
-                  If <var>connection</var>.{{RTCPeerConnection/[[IsClosed]]}} is
-                  <code>true</code>, abort these steps.
-                </p>
-              </li>
-              <li>
-                <p>
-                  Let <var>newState</var> be the value of deriving a new state
-                  value as described by the {{RTCIceGatheringState}} enum.
-                </p>
-              </li>
-              <li>
-                <p>
-                  If <var>connection</var>.{{RTCPeerConnection/[[IceGatheringState]]}} is equal
-                  to <var>newState</var>, abort these steps.
-                </p>
-              </li>
-              <li>
-                <p>
-                  Set <var>connection</var>.{{RTCPeerConnection/[[IceGatheringState]]}} to
-                  <var>newState</var>.
-                </p>
-              </li>
-              <li data-tests="protocol/candidate-exchange.https.html">
-                <p>
-                  [= Fire an event =] named {{RTCPeerConnection/icegatheringstatechange}} at
-                  <var>connection</var>.
-                </p>
-              </li>
-              <li data-tests="RTCPeerConnection-iceGatheringState.html">
-                <p>
-                  If <var>newState</var> is
-                  {{RTCIceGatheringState/"complete"}}, [= fire an event =]
-                  named {{RTCPeerConnection/icecandidate}} using the
-                  {{RTCPeerConnectionIceEvent}} interface with the candidate
-                  attribute set to <code>null</code> at <var>connection</var>.
-                </p>
-                <div class="note">
-                  The null candidate event is fired to ensure legacy
-                  compatibility. New code should monitor the gathering state of
-                  {{RTCIceTransport}} and/or {{RTCPeerConnection}}.
-                </div>
-              </li>
-            </ol>
-          </section>
           <section>
             <h4>
               Set the session description