<form class="form-horizontal">
    <fieldset>
        <legend>Sign up</legend>
            <div class="control-group">
                    <%= form_for(resource, :as => resource_name, :url => registration_path(resource_name)) do |f| %>
                    <%= devise_error_messages! %>
                <div>
                    <div><%= f.label :email %>*<br />
                    <%= f.email_field :email %>
                </div>
                <div>
                    <%= f.label :phone %><br />
                    <%= f.phone_field :phone %>
                </div>
                <div>
                    <%= f.label :password %>*<br />
                    <%= f.password_field :password %>
                </div>
                <div>
                    <%= f.label :password_confirmation %>*<br />
                    <%= f.password_field :password_confirmation %>
                </div>
                <div>
                    <%= f.submit "Sign Up", :class => 'btn btn-primary' %>
                </div>
                <% end %>
                <%= render "links" %>
        </div>
    </fieldset>
</form>

<legend>Sign up</legend>
        <%= form_for(resource, :as => resource_name, :url => registration_path(resource_name)) do |f| %>
        <%= devise_error_messages! %>
    <div>
        <div><%= f.label :email %>*<br />
        <%= f.email_field :email %>
    </div>
    <div>
        <%= f.label :phone %><br />
        <%= f.phone_field :phone %>
    </div>
    <div>
        <%= f.label :password %>*<br />
        <%= f.password_field :password %>
    </div>
    <div>
        <%= f.label :password_confirmation %>*<br />
        <%= f.password_field :password_confirmation %>
    </div>
    <div>
        <%= f.submit "Sign Up", :class => 'btn btn-primary' %>
    </div>
    <% end %>
    <%= render "links" %>


Remove form within a form on new user reg page
Remove form within a form on new user reg page
