PHP code to prevent loading of Revolution Slider and Contact Form 7. Test the Rev Slider code. I recall having trouble deregistering Themepunch.

deregister_silder_revolution_contact_form_7.php

<?php

/**
 * Don't load Revolution Slider & Contact Form 7 plugins
 * if the page doesn't need them.
 */
function my_deregister_javascript() {
  if ( !is_page(YOURPAGEGOESHERE) ) {
    wp_deregister_script( 'jquery.themepunch.tools' );
    wp_dequeue_script( 'jquery.themepunch.tools' );
    wp_deregister_script( 'jquery.themepunch.revolution' );
    wp_dequeue_script( 'jquery.themepunch.revolution' );
  }
  if ( !is_page(YOURPAGEGOESHERE) ) {
    wp_deregister_script( 'contact-form-7' );
    wp_dequeue_script( 'contact-form-7' );
    wp_deregister_script( 'avada-contact-form-7' );
    wp_dequeue_script( 'avada-contact-form-7' );
  }
}
add_action( 'wp_print_scripts', 'my_deregister_javascript', 100 ); 

/**
 * Really make sure the Revolution Slider JS don't load
 * if the above does not work.
 */
function wra_remove_wphead_filter(){
    if ( !is_page(YOURPAGEGOESHERE) ) {
        remove_action('wp_head', 'jquery.themepunch.tools', 10);
        remove_action('wp_head', 'jquery.themepunch.revolution', 10);
    }
}
add_action('wp_print_head_scripts', 'wra_remove_wphead_filter', 100000);