VIP inbox can be vey useful feature for those who receive a lot of emails from a lot of different people. For others however, this feature may not be practical. We receive a lot of questions from iPad / iPhone users regarding the VIP mailbox: “How can i delete the VIP Mailbox from the mail screen?”
If you want to delete the vip inbox, as of now, there is no way to disable / remove / hide it. However what you can do is move the VIP box to the bottom of the mailbox list. This way you can re-arrange the order of the mailboxes. You can move it by tapping the edit button at the top right. A 3 horizontal line icon will appear beside each mailbox, then tap and hold on the icon that appears next to “VIP” on the right and drag it where you want it then tap done. Please note that moving only works if you have multiple e-mail accounts on your iPhone or iPad. If you just have one account, VIP will still be there but tapping EDIT will not let you move.
Related:
How to manage your email better with VIP lists and VIP notifications in iOS