Remove support for disable video stream

Remove code to disable my video camera and keep only audio stream.

static/sfu.html

@@ -211,9 +211,6 @@
         <span class="volume" title="Volume">
           <i class="fas fa-volume-up" data-type="bt-volume" aria-hidden="true"></i>
         </span>
-        <span class="camera" title="Camera">
-          <i class="fas fa-video"  data-type="bt-camera" aria-hidden="true"></i>
-        </span>
         <span class="pip" title="Picture In Picture">
           <i class="fas fa-clone" data-type="bt-pip" aria-hidden="true"></i>
         </span>

static/sfu.js

@@ -767,19 +767,15 @@ async function setMaxVideoThroughput(c, bps) {
 
 /**
  * @param {string} [id]
- * @param {boolean} [disableVideo]
  */
-async function addLocalMedia(id, disableVideo) {
+async function addLocalMedia(id) {
     if(!getUserPass())
         return;
 
     let settings = getSettings();
 
     let audio = settings.audio ? {deviceId: settings.audio} : false;
-    let video =
-        disableVideo ? false :
-        settings.video ? {deviceId: settings.video} :
-        false;
+    let video = settings.video ? {deviceId: settings.video} : false;
 
     if(video) {
         if(settings.blackboardMode) {
@@ -1011,7 +1007,6 @@ function muteLocalTracks(mute) {
  */
 function setMedia(c, isUp, video) {
     let peersdiv = document.getElementById('peers');
-    let settings = getSettings();
     let local_media;
 
     for(let id in serverConnection.up) {
@@ -1079,15 +1074,8 @@ function setMedia(c, isUp, video) {
                     volume.classList.add("fa-volume-off");
                 }
             }
-            let camera = controls.querySelector("span.camera");
-            if (local_media && local_media.kind === "local") {
-                if (!settings.video) {
-                    if (camera)
-                        camera.classList.add("camera-off");
-                }
+            if (local_media && local_media.kind === "local")
                 volume.parentElement.remove();
-            } else
-                camera.remove();
         }
 
         media.srcObject = c.stream;
@@ -1183,27 +1171,6 @@ function registerControlEvent(peerid) {
             }
         };
     }
-
-    let camera = /** @type {HTMLElement} */(peer.querySelector("span.camera"));
-    if(camera) {
-        camera.onclick = function(event) {
-            event.preventDefault();
-            let camera = /** @type {HTMLElement} */(event.target);
-            let video = getParentVideo(camera);
-            let id = video.id.split("-")[1];
-            if(!settings.video)
-                return;
-            if(camera.getAttribute("data-type") === "bt-camera") {
-                addLocalMedia(id, true);
-                camera.setAttribute("data-type", "bt-camera-off");
-                camera.parentElement.classList.add("disabled");
-            } else {
-                camera.setAttribute("data-type", "bt-camera");
-                camera.parentElement.classList.remove("disabled");
-                addLocalMedia(id);
-            }
-        };
-    }
 }