Hi!
Do this:
//* Remove the header right widget area
unregister_sidebar( 'header-right' );
(I added the .css below w/o doing the remove header widget and it worked, so try)
Add this to your .css
/* Full width header, no widgets */
.title-area .site-title a {
background-position: center center!important;
float:none!important;
margin-left:auto!important;
margin-right:auto!important;
}