Ha ha! I found how to do it. For anyone else wanting to do this, you need to do the following.
1, Go to Apperance-Editor-category.php.
2, Look for the following code.
<h1>
<?php printf( __( 'Category Archives: %s', CURRENT_THEME ), '<span>' . single_cat_title( '', false) . '</span>' );?>
</h1>
<?php
$category_description = category_description();
if ( ! empty( $category_description ) )
echo apply_filters( 'category_archive_meta', '<div>' . $category_description . '</div>' );?>
3, Replace with the following (where /* [to disable]*/ is added):
<h1>
<?php /*printf( __( 'Category Archives: %s', CURRENT_THEME ), '<span>' . single_cat_title( '', false) . '</span>' )*/;?>
</h1>
<?php
/*$category_description = category_description();
if ( ! empty( $category_description ) )
echo apply_filters( 'category_archive_meta', '<div>' . $category_description . '</div>' )*/;?>