Removes Firefox extension handle (removed in FF newer than latest ESR).

conference.js

                 }
             );
 
-            return;
-        } else if (error.name === JitsiTrackErrors.FIREFOX_EXTENSION_NEEDED) {
-            APP.UI.showExtensionRequiredDialog(
-                config.desktopSharingFirefoxExtensionURL
-            );
-
             return;
         }
 

config.js

     // Required version of Chrome extension
     desktopSharingChromeMinExtVersion: '0.1',
 
-    // The ID of the jidesha extension for Firefox. If null, we assume that no
-    // extension is required.
-    desktopSharingFirefoxExtId: null,
-
     // Whether desktop sharing should be disabled on Firefox.
     desktopSharingFirefoxDisabled: false,
 
-    // The maximum version of Firefox which requires a jidesha extension.
-    // Example: if set to 41, we will require the extension for Firefox versions
-    // up to and including 41. On Firefox 42 and higher, we will run without the
-    // extension.
-    // If set to -1, an extension will be required for all versions of Firefox.
-    desktopSharingFirefoxMaxVersionExtRequired: 51,
-
-    // The URL to the Firefox extension for desktop sharing.
-    desktopSharingFirefoxExtensionURL: null,
-
     // Optional desktop sharing frame rate options. Default value: min:5, max:5.
     // desktopSharingFrameRate: {
     //     min: 5,

lang/main.json

         "tokenAuthFailed": "Sorry, you're not allowed to join this call.",
         "displayNameRequired": "Display name is required",
         "enterDisplayName": "Please enter your display name",
-        "extensionRequired": "Extension required:",
-        "firefoxExtensionPrompt": "You need to install a Firefox extension in order to use screen sharing. Please try again after you <a href='__url__'>get it from here</a>!",
         "feedbackHelp": "Your feedback will help us to improve our video experience.",
         "feedbackQuestion": "Tell us about your call!",
         "thankYou": "Thank you for using __appName__!",

modules/UI/UI.js

  */
 UI.isPinned = userId => VideoLayout.getPinnedId() === userId;
 
-/**
- * Shows dialog with a link to FF extension.
- */
-UI.showExtensionRequiredDialog = function(url) {
-    messageHandler.openMessageDialog(
-        'dialog.extensionRequired',
-        '[html]dialog.firefoxExtensionPrompt',
-        { url });
-};
-
 /**
  * Shows "Please go to chrome webstore to install the desktop sharing extension"
  * 2 button dialog with buttons - cancel and go to web store.