Removed old code from the header

apps/explorer_web/lib/explorer_web/templates/layout/_topnav.html.eex

@@ -54,46 +54,3 @@
     </div>
   </div>
 </nav>
-
-
-
-<!--
-<header class="header">
-  <div class="header__row header__row--search">
-    <div class="header__cell header__cell--search">
-      <%= form_for @conn, chain_path(@conn, :search, Gettext.get_locale), [class: "header__cell--search-form", method: :get, enforce_utf8: false], fn f -> %>
-        <i class="header__cell--search-glass fa fa-search"></i>
-        <%= search_input f, :q, class: 'header__cell--search-input', placeholder: gettext("Search by address, transaction hash, or block number"), "data-test": "search_input" %>
-      <% end %>
-    </div>
-  </div>
-  <nav class="header__row header__row--topnav">
-    <ul class="nav">
-      <li class="nav-item">
-        <%= link to: chain_path(@conn, :show), class: "nav-link" do %>
-          <i class="fas fa-home fa-2x text-muted"></i>
-        <% end %>
-      </li>
-
-      <li calss="nav-item dropdown">
-        <a class="topnav-nav-link nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
-          <img src="<%= static_path(@conn, "/images/transaction.svg") %>" />
-          <%= gettext("Transactions") %>
-        </a>
-        <div class="dropdown-menu" aria-labelledby="navbarDropdown">
-          <%= link(gettext("Validated"), to: transaction_path(@conn, :index, Gettext.get_locale), class: "dropdown-item")  %>
-          <%= link(gettext("Pending"), to: pending_transaction_path(@conn, :index, Gettext.get_locale), class: "dropdown-item") %>
-        </div>
-      </li>
-    </ul>
-  </nav>
-  <div class="dropdown">
-    <button class="switch-network dropdown-toggle" type="button" id="dropdownMenuButton" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
-      Switch Network
-    </button>
-    <div class="dropdown-menu switch-network-menu" aria-labelledby="dropdownMenuButton">
-      <a class="dropdown-item switch-network-item" href="https://explorer-core.poanetwork/">POA Core</a>
-      <a class="dropdown-item switch-network-item" href="https://explorer-sokol.poanetwork/">POA Sokol</a>
-    </div>
-  </div>
-</header> -->