Filter Redirect URL For Caldera Forms

<?php
add_filter( 'caldera_forms_redirect_url', function( $url, $form) {
    //make sure to substitute your form's ID here!
    if ( 'CF557dd7b7739ac' == $form[ 'ID' ] ) {
        $url = remove_query_arg( 'cf_id', $url );
    }

    return $url;
}, 5, 2 );