This could happen if you are on the home page. The reason is that Pages is root node for all frontend pages. You can easily remove this with jQuery or subscribing for ItemCreated event of the SiteMpaPath and hiding the Pages node when you are on the home page.
the Telerik team
Do you want to have your say in the Sitefinity development roadmap? Do you want to know when a feature you requested is added or when a bug fixed? Explore the Telerik Public Issue Tracking
system and vote to affect the priority of the items