How can I TOTALLY remove Google from my Sony Bravia Ultra HD 4K smart TV? (XBR-55X81XCH)

No one told me when I bought the TV that Google was permanently installed in this TV and I could not set the TV up unless I activated a Google account in order to use the TV. The package does not indicate that this can not be used without Google. As the owner of this product I was not informed. I am very upset about it. Google also has a listening device called Google assist that can not be turned off even when the power is switched off. I tested it and it is running in the background. Its the evil version of Alexa. At least with Alexa you know what you have. But Google assist is listening to you when you think the tv is off... F- No- thank you! I need this app gone! Not disabled, GONE. Does anyone know how to do this?