Remove fast-forward and rewind buttons

frontend/src/ControlBar.tsx

@@ -2,10 +2,8 @@ import React from 'react';
 import { PlayState } from './AppState';
 import {
   CloudDownloadIcon,
-  FastForwardIcon,
   PauseIcon,
   PlayIcon,
-  RewindIcon,
   ZoomInIcon,
   ZoomOutIcon,
 } from '@heroicons/react/solid';
@@ -59,18 +57,12 @@ const ControlBar: React.FC<Props> = React.memo((props: Props) => {
   return (
     <>
       <div className="relative grow-0 w-full py-2 space-x-2">
-        <button className={buttonStyle}>
-          <RewindIcon className={iconStyle} />
-        </button>
         <button
           className={buttonStyle}
           onClick={(evt) => filterMouseEvent(evt, props.onTogglePlay)}
         >
           {playPauseComponent}
         </button>
-        <button className={buttonStyle}>
-          <FastForwardIcon className={iconStyle} />
-        </button>
         <button
           className={props.zoomInEnabled ? buttonStyle : disabledButtonStyle}
           onClick={(evt) => filterMouseEvent(evt, props.onZoomIn)}