How to remove blog tools webpart from webpart gallary.  We don't want people to add blog tools webpart to a page ( whoever access to a page edit) , so we would want to remove that blog webpart category from SharePoint 2013.  How to do it? It doesn't work even if we add to a page unless you create a blog site.  So I am not sure what is the reason Microsoft has given option/category in list of out of box webparts. 

go to site settings, web part under web designer galleries and delete all blog related list items, however do take caution before deleting these webparts and discuss with your Admin before doing it.