You know, you do not have to be a jerk about this, CMD. I found this perfectly useful, and yes, it may be there opinion, but did your mother ever tell you that if you don't have anything nice to say, then say nothing at all? And, just to add to how much of an ■■■■■■■ you are, yes, you can do this from you're Xbox, don't try to pretend that you are some expert on the subject, you aren't.
How to deactivate Netflix from your Xbox:
Hold the Guide button on your controller to power on the console.
Tap the Guide button again to open a menu with several console options.
Select the "Settings" blade and choose "System Settings." The Guide menu will close and a new system menu will appear.
Choose "Memory" and select the device that has Netflix installed. This is likely your hard drive. A new menu list will appear with memory topics.
Choose "Games" from the topics list. An alphabetical list of games will appear.
Choose "Netflix" from the games list. This will open saved Netflix items on your console.
Delete "Netflix" and "Netflix Credentials" from the console by pressing "A" and choosing "Delete" for each item.
P.S. Thank you very much for the useful post, EzDuzIt