In bootstrap 3, I think we can do something like that, for remove left and right margin :
<div class="row this_row">
<div class="col-md-2 col-md-offset-1"></div>
<div class="col-md-2"></div>
<div class="col-md-2"></div>
<div class="col-md-2"></div>
<div class="col-md-2"></div>
</div>
and CSS
.this_row {
margin: 0 -5%;
}