The data stored in these files (cookies) are needed and are used for the correct functioning of the site, also they serve also make navigation more efficient user.
A cookie is a small text files that websites store on your computer or mobile device when you visit them.
Thanks to cookies the site remember your actions and preferences (eg. Login, language, font size and other display settings) so that you do not put them back when you get on the site and browse from page to page.
Most navigation browser such as Internet Explorer, Chrome, Firefox, Safari, etc ..., are configured to accept cookies.
Although not recommended, you can still check, remove, and disable cookies through the settings and preferences of each individual browser.
Below please refer to the official websites of the manufacturers of the major browsers where to find all the documents to remove or disable cookies.