Removes firefox from the list of recommended browsers. (#5017)

static/recommendedBrowsers.html

             We recommend to try with the latest version of 
             <a
                 className = 'unsupported-desktop-browser__link'
-                href = 'http://google.com/chrome' >Chrome</a>,&nbsp;
-            <a
-                class = 'unsupported-desktop-browser__link'
-                href = 'http://www.getfirefox.com/'>Firefox</a>&nbsp;or&nbsp;
+                href = 'http://google.com/chrome' >Chrome</a>&nbsp;or&nbsp;
             <a
                 class = 'unsupported-desktop-browser__link'
                 href = 'http://www.chromium.org/'>Chromium</a>