Fix(map): remove map drawer from non-react pages

map drawer will be reserved for react pages only
closes #9341

server/views/partials/navbar.jade

@@ -7,9 +7,7 @@ nav.navbar.navbar-default.navbar-fixed-top.nav-height
             img.img-responsive.nav-logo(src='https://s3.amazonaws.com/freecodecamp/freecodecamp_logo.svg', alt='learn to code javascript at Free Code Camp logo')
     .collapse.navbar-collapse
         ul.nav.navbar-nav.navbar-right.hamburger-dropdown
-            li.hidden-xs
-                a#nav-map-btn(href='/map' onclick='if (!(event.ctrlKey || event.metaKey)) {return false;}') Map
-            li.visible-xs
+            li
                 a(href='/map') Map
             li.hidden-xs
                 a#nav-chat-btn(href='//gitter.im/freecodecamp/freecodecamp' onclick="if (!(event.ctrlKey || event.metaKey)) {return false;}") Chat