Function only on a specific page

define the function:

// my_formatter - register custom text formatter for specified post or page
function my_formatter($content) {
    $new_content="";
    $pattern_full="{(\[raw\].*?\[/raw\])}is";
    $pattern_contents="{\[raw\](.*?)\[/raw\]}is";
    $pieces = preg_split($pattern_full, $content, -1, PREG_SPLIT_DELIM_CAPTURE);

    foreach ($pieces as $piece) {
        if (preg_match($pattern_contents, $piece, $matches)) {
            $new_content .= $matches[1];
        } else {
            $new_content .= wptexturize(wpautop($piece));
        }
    }
    return $new_content;
}

Simply add the following code. you should change 100 with your desired page ID.

if ( is_page( 100 ) ){ // you should change this line
    remove_filter('the_content', 'wpautop');
    remove_filter('the_content', 'wptexturize');
    add_filter('the_content', 'my_formatter', 99);
}