Around line 780 bootstrap-responsive.css :
@media (max-width: 767px) { body { padding-right: 20px; padding-left: 20px; }
Cancel this add-on with 0 and it will be complete.
For instance:
@media (max-width: 767px) { body { padding-right: 0 !important; padding-left: 0 !important; } }
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