Get Started with Windows 10

It is my experience with Microsoft programs that applications included within a program, cannot be removed or deleted from the program and attempting to do so will create unusable software with regard to the parent program.  In other words, if you attempt to delete what you said and actually manage to delete it, you will not be able to use Windows 10.

Best direction is to ignore the two apps within Windows 10 and there are ways within Windows 10 that I believe you can set so they  will not appear unless you actually open them separately.  Hope that helps.

Let me say this, you did not say if you are using IE or Edge as your browser but in either case in "Settings" within either browser, you can set where you want the browser to go when you open it, i.e., a blank page, or to Google or wherever.  I am a bit surprised by you not wanting to use Bing as I began using it shortly after introduction and much prefer it over anything else.  Then again, if we all liked the same thing, we all would be driving white cars and living in houses that look alike and etc.  So, . . . 

In my system, I very seldom ever use Cortina.  It just doesn't do much for me and normally will direct me to the web when I instead wish to look with in my own system.  So, I just totally ignore it.  IF I want to see something in my system, I use File Explorer and have it set to show everything including hidden files and folders.

Again, I hope this helps you.

Lenovo released a guide you can download:

https://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles_pdf/lnb_win10_qsg_en.pdf