By default the WordPress Twenty Twelve Theme has duplicate H1 tags, which from an SEO point of view I would prefer to avoid.
One set of H1 tags is generated by the entry-title. It is this set of h1 tags that I would like to keep.
The other set of H1 tags is generated from the site-title.
To solve the problem I have copied the header.php file into my child theme. I can then edit the following code to replace the h1 tag with an h3 tag
<h1 class="site-title"><a href="<?php echo esc_url( home_url( '/' ) ); ?>" title="<?php echo esc_attr( get_bloginfo( 'name', 'display' ) ); ?>" rel="home"><?php bloginfo( 'name' ); ?></a></h1>
However, this then means that in the page source, the H3 tag is above the H1 tag, which still isn't ideal from an SEO point of view.
My question is, if I delete the entire string of code to have neither an H1 nor an H3 tag for the site-title, is it likely to cause any problems?