How to affect front page by plugin

If your intent is to remove that function/action only on the front page (not clear from your question), then this code

    if (is_front_page) {
       remove_action( 'woocommerce_single_product_summary',
 'woocommerce_template_single_price');

    }

This code needs to be outside of the ‘admin’ code area of the plugin. See this link for documentation on is_front_page() https://codex.wordpress.org/Function_Reference/is_front_page

If that is not your question, then please edit your question to provide more detail.