app/views/cancel_accounts/edit.html.erb
<% content_for :my_account_content do %>
<h2><%= t('devise.registrations.edit.cancel_my_account') %></h2>
<p><%= t 'cancel_accounts.edit.message' %></p>
<%= simple_form_for(current_user, url: cancel_accounts_path, method: :delete) do |f| %>
<%= f.input :current_password, :required => true, placeholder: t('layouts.application.placeholders.password') %>
<%= f.button :submit, t('devise.registrations.edit.cancel_my_account') %>
<% end %>
<% end %>
<%= render 'common/my_account' %>