removed controller actions and views not needed

app/views/mats/index.html.erb

@@ -1,29 +0,0 @@
-<h1>Listing mats</h1>
-
-<table>
-  <thead>
-    <tr>
-      <th>Name</th>
-      <th>Tournament</th>
-      <th></th>
-      <th></th>
-      <th></th>
-    </tr>
-  </thead>
-
-  <tbody>
-    <% @mats.each do |mat| %>
-      <tr>
-        <td><%= mat.name %></td>
-        <td><%= mat.tournament_id %></td>
-        <td><%= link_to 'Show', mat %></td>
-        <td><%= link_to 'Edit', edit_mat_path(mat) %></td>
-        <td><%= link_to 'Destroy', mat, method: :delete, data: { confirm: 'Are you sure?' } %></td>
-      </tr>
-    <% end %>
-  </tbody>
-</table>
-
-<br>
-
-<%= link_to 'New Mat', new_mat_path %>

app/views/mats/index.json.jbuilder

@@ -1,4 +0,0 @@
-json.array!(@mats) do |mat|
-  json.extract! mat, :id, :name, :tournament_id
-  json.url mat_url(mat, format: :json)
-end