how to delete old wp-ajax row

i was using side cart plugin on my website.

here: https://wordpress.org/plugins/side-cart-woocommerce/

i noticed that, the plugin charges heavy process on my web site

so i decided to remove the plugin.

i tested mt website with gtmetrix

enter image description here

post ?wp-ajax=…

by reactivating the plugin the row will be doubled and by remove or disabling the plugin one row up to over 5 seconds remaining.

check: https://gymarket.ir/?wc-ajax=get_refreshed_fragments

maybe this is not related to that plugin at all?

how to remove that ajax row? maybe cause any problem?

check my main site page: https://gymarket.ir

i have replaced another plugin instead of side cart plugin.

i found this on other website, smaller codes without that ajax row on gtmetrix:

{"fragments":{"div.widget_shopping_cart_content":"<div class=\"widget_shopping_cart_content\">\n<div class=\"shopping-cart-widget-body woodmart-scroll\">\n\t<div class=\"woodmart-scroll-content\">\n\n\t\t\n\t\t\t<p class=\"woocommerce-mini-cart__empty-message empty\">\u0633\u0628\u062f \u062e\u0631\u06cc\u062f \u0634\u0645\u0627 \u062e\u0627\u0644\u06cc \u0627\u0633\u062a.<\/p>\n\t\t\t\t\t\t\t<p class=\"return-to-shop\">\n\t\t\t\t\t<a class=\"button wc-backward\" href=\"https:\/\/www.reliefshop.ir\/products\/\">\n\t\t\t\t\t\t\u0628\u0627\u0632\u06af\u0634\u062a \u0628\u0647 \u0641\u0631\u0648\u0634\u06af\u0627\u0647\t\t\t\t\t<\/a>\n\t\t\t\t<\/p>\n\t\t\t\n\t\t\n\t<\/div>\n<\/div>\n\n<div class=\"shopping-cart-widget-footer woodmart-cart-empty\">\n\t\n\t<\/div>\n<\/div>","span.woodmart-cart-number":"\t\t\t<span class=\"woodmart-cart-number\">0 <span>\u0622\u06cc\u062a\u0645<\/span><\/span>\n\t\t","span.woodmart-cart-subtotal":"\t\t\t<span class=\"woodmart-cart-subtotal\"><span class=\"woocommerce-Price-amount amount\">0&nbsp;<span class=\"woocommerce-Price-currencySymbol\">\u062a\u0648\u0645\u0627\u0646<\/span><\/span><\/span>\n\t\t"},"cart_hash":""}