Mails received as cc usually should not include any action items for you and therefore have lower priority by default. These mails should therefore not remain in your mailbox and distract your attention form important action items and information.
Since it is not possible nor desirable stopping other people from adding you to their mails on cc you have to manage them. One of the best ways is to create a separate folder for cc mails in your inbox and to set a rule in your email application that automatically forwards mails with your name in cc to this folder.
You can still read them but only after you have cleared the important items and you will only pay attention to cc mails once or twice a day.
Related articles:

Loading ...
Hi, interest post. I’ll write you later about few questions!