Remove Gravity Forms jQuery and all inline <script> tags

strip-unwanted-gravity-forms-jquey-and-inline-scripts.php

/**
 * Force GFORM Scripts inline next to Form Output
 *
 * force the script tags inline next to the form. This allows
 * us to regex them out each time the form is rendered.
 * 
 * see strip_inline_gform_scripts() function below
 * which implements the required regex
 */
function force_gform_inline_scripts() {
    return false;
}
add_filter("gform_init_scripts_footer", "force_gform_inline_scripts");

/**
 * Strip out GForm Script tags
 *
 * note: this diables post and pre render hooks which are triggered
 * when the form renders so if you need these then it's important
 * to manually re-add them in your compiled JS source code
 */
function strip_inline_gform_scripts( $form_string, $form ) {
  return $form_string = preg_replace('#<script(.*?)>(.*?)</script>#is', '', $form_string);
}
add_filter("gform_get_form_filter", "strip_inline_gform_scripts", 10, 2);

how to use?