Your store does not have to be on all social media channels. In fact most brands usually have one or two channels that they drive sales on. If a consumer clicks on your link and sees that your business rarely posts and has very little action on their favorite social media hangout nothing good comes of that. Unless you really work a channel remove the links. It’s fine to have a non-active page out there just as a way to prevent some other entity from pretending to be your brand, but don’t link to a dead page.
Bonus hint: It looks REALLY bad if you link to a google plus page considering Google killed that off a long time ago.