Remove author name for the post

For this you need to change your functions.php

Replace your twentyten_posted_on function with this function

function twentyten_posted_on() {
printf( __( ‘<span class=”%1$s”>Posted on</span> %2$s ‘, ‘twentyten’ ),
‘meta-prep meta-prep-author’,
sprintf( ‘<span class=”entry-date”>%3$s</span>‘,
get_permalink(),
esc_attr( get_the_time() ),
get_the_date()
)
);
}