Delete other user except current_user in rails app using devise gem

I am trying to list all the users who are using my application and delete only those that i want. But every time when i try to delete my user it passes localhost:3000/users.2 instead of localhost:3000/users/2.

And also it doesn't delete selected user rather it delete current user. But i don't want to delete current user.

I have not modified any controllers or models but only used following codes in my view to list and delete user.

<table class="table table-hover table-striped">
      <thead>
      <tr class="bg-primary">
        <th>S.N.</th>
        <th>Name</th>
        <th>Email</th>
        <th>Created at</th>
        <th>Action</th>
      </tr>
      </thead>
      <% @users.each_with_index do |u, i| %>
          <% if current_user.email != u.email %>
              <tbody>
              <tr>
                <td><%= (@page.to_i - 1) * @perpage + i+1 %></td>
                <td>
                  <% if u.first_name.present?%>
                      <%= u.first_name.slice(0, 1).capitalize + u.first_name.slice(1..-1) %>
                  <% end %>
                  <% if u.middle_name.present? %>
                      <%= u.middle_name.slice(0, 1).capitalize + u.middle_name.slice(1..-1) %>
                  <% end %>
                  <% if u.last_name.present? %>
                      <%= u.last_name.slice(0, 1).capitalize + u.last_name.slice(1..-1) %>
                  <% end %>
                </td>
                <td>
                  <%= u.email %>
                </td>
                <td>
                  <%= u.created_at %>
                </td>
                <td>
                  <a data-confirm="Are you sure to delete" rel="nofollow" data-method="delete" href="<%= user_registration_path(u)%>">
                    <span class="fa-delete">
                      <i class="fa fa-trash fa-th-large fa-2x"></i>
                    </span>
                  </a>
                </td>
              </tr>
              </tbody>
          <% end %>
      <% end %>
    </table>