删除图片网址中的硬编码？arg

Question

I have hardcoded img src urls in Wordpress posts body. They consist of garbage param - ?itok. Example: img src="https://example.com/public/images/someimage.jpg?itok=WDGFySy"

I try something like that:

function sm_remove_cssjs_ver( $src ) {
    if( strpos( $src, '?itok=' ) )
        $src = remove_query_arg( 'itok', $src );
    return $src;
}
add_filter( 'style_loader_src', 'sm_remove_cssjs_ver', 10, 1 );
add_filter( 'script_loader_src', 'sm_remove_cssjs_ver', 10, 1 );

This code perfect works for remove ?ver in head fo site, but in body it doesn't work. Please give me some advice where to dig to fix this. Thank you.