Amy,
Its the part of OData protocol, you can not hide it. Basically these OData are consumed from clinet(like UI5) , and client libraries make use of these URLs for navigations I believe .
BTW, why you want to hide it ?
This is causing security concerns since it reveals the server and host.
==> How ever to access your OData , you have to expose your host and port. Then what is wrong in displaying the same in OData body ?
Sreehari