filmstrip: don't display toolbar for SIP gateways

Note that in the usual (vertical) setup, the "toolbar" is just the hide button.

react/features/filmstrip/components/web/Filmstrip.js

      */
     _hideScrollbar: boolean,
 
+    /**
+     * Whether the filmstrip toolbar should be hidden or not.
+     */
+    _hideToolbar: boolean,
+
     /**
      * Whether or not remote videos are currently being hovered over. Hover
      * handling is currently being handled detected outside of react.
             remoteVideosWrapperClassName += ' hide-scrollbar';
         }
 
+        let toolbar = null;
+
+        if (!this.props._hideToolbar) {
+            toolbar = this.props._filmstripOnly ? <Toolbar /> : this._renderToggleButton();
+        }
+
         return (
             <div
                 className = { `filmstrip ${this.props._className}` }
                 style = { filmstripStyle }>
-                { this.props._filmstripOnly
-                    ? <Toolbar /> : this._renderToggleButton() }
+                { toolbar }
                 <div
                     className = { this.props._videosClassName }
                     id = 'remoteVideos'>
         _filmstripOnly: isFilmstripOnly,
         _filmstripWidth: filmstripWidth,
         _hideScrollbar: Boolean(iAmSipGateway),
+        _hideToolbar: Boolean(iAmSipGateway),
         _hovered: hovered,
         _rows: gridDimensions.rows,
         _videosClassName: videosClassName,