Thematic remove Author information from postheader (filter example)

gistfile1.php

<?php
// reference http://thematictheme.com/forums/topic/making-minor-amendments-to-templates/
// reference override example (same thing, different way to do it). I prefer the filter. https://gist.github.com/scottnix/5790774

// remove the author information from all posts using a filter
function childtheme_postheader_postmeta($postmeta) {
    $postmeta  = "\n\t\t\t\t\t";
    $postmeta .= '<div class="entry-meta">' . "\n\n";
    $postmeta .= "\t" . thematic_postmeta_entrydate() . "\n\n";
    $postmeta .= "\t" . thematic_postmeta_editlink() . "\n\n";
    $postmeta .= '</div><!-- .entry-meta -->' . "\n";

    return $postmeta;
}
add_filter('thematic_postheader_postmeta', 'childtheme_postheader_postmeta');

// remove the author information from only categories using a filter
// this is just an example of the above, but utilizing a conditional wordpress tag
function childtheme_postheader_postmeta($postmeta) {
    if ( is_category() ) {
        $postmeta  = "\n\t\t\t\t\t";
        $postmeta .= '<div class="entry-meta">' . "\n\n";
        $postmeta .= "\t" . thematic_postmeta_entrydate() . "\n\n";
        $postmeta .= "\t" . thematic_postmeta_editlink() . "\n\n";
        $postmeta .= '</div><!-- .entry-meta -->' . "\n";
    }
    return $postmeta;
}
add_filter('thematic_postheader_postmeta', 'childtheme_postheader_postmeta');

Override Example - https://gist.github.com/scottnix/5790774
Filter Example - https://gist.github.com/scottnix/5790772

Both do the same thing. You only need one of these functions, the second function is a example of using a conditional to achieve different results depending on your needs, the above example retains the normal functionality on everything except the categories, which are set to not show the Author Name.