Problem with navbar bootstrap 3

Person, good night! I have problems with the styling of the icon-bar. Part of the code contained the search form, so I removed it. And in the search it contained the navbar-left With this removal broke part of the code, according to image when clicking on the icon-bar it is on the right and I can not play the left.

header.php

<navclass="navbar navbar-default">
        <div class="container-fluid">

          <div class="navbar-header">
            <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="true">
              <span class="sr-only">Toggle navigation</span>
              <span class="icon-bar"></span>
              <span class="icon-bar"></span>
              <span class="icon-bar"></span>
            </button>
          </div>


          <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
            <ul class="nav navbar-nav">
              <li class="active"><a href="#">Principal <span class="sr-only">(current)</span></a></li>

              <li class="dropdown">
                <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Restaurante <span class="caret"></span></a>
                <ul class="dropdown-menu">
                  <li><a href="#">Adega</a></li>
                  <li><a href="#">Galeria de Fotos</a></li>
                </ul>
              </li>

              <li><a href="#">O Cardápio</a></li>
              <li><a href="#">Eventos</a></li>
              <li><a href="#">Contato</a></li>

            </ul>

          </div><!-- /.navbar-collapse -->
        </div><!-- /.container-fluid -->
      </nav>