Removed placeholder navigation items and reference to old local navigation bar

Author: djanelle-mit

app/views/layouts/_site_header.html.erb

@@ -3,12 +3,6 @@
     <a class="link-logo-mit" href="https://www.mit.edu"><span class="sr">MIT Logo</span>
       <img src="https://cdn.libraries.mit.edu/files/branding/local/mit_logo_std_rgb_white.svg" height="24" alt="MIT logo" >
     </a>
-    <nav>
-      <a href="#">Libraries Home</a>
-      <a href="#">Hours & Locations</a>
-      <a href="#">Ask Us</a>
-      <a href="#">Account</a>
-    </nav>
   </div>
 </div>
 <div class="libraries-header">