How to remove a locked Apple account from iPhone 11 Pro

Your situation, and solutions, are similar to what is described in this article: How to remove Activation Lock - Apple Support

#1 If you have the necessary information, you or the signed in owner can do this yourself by simply signing in with the owner account and password information and doing as instructed in the above article. If you use this method and this is a new device to you, follow unlocking by doing as outlined in What to do before you sell, give away, or trade in your iPhone or iPad - Apple Support or What to do before you sell, give away, trade in, or recycle your Mac - Apple Support . If you do not have the required information or Apple has permanently locked the account —>

#2 Apple can completely reset a device if a person can provide sufficient evidence of valid ownership. Read the requirements and steps for an Activation Lock support request at: https://al-support.apple.com/#/additional-support and links at the bottom right for the type of service requested. Apple says they “may” require "proof of purchase documentation” and that you need “proof of ownership documentation”, but does not detail what currently constitutes proof other than it “must include the product serial number, IMEI or MEID.” User reports on this community and chat with Apple indicate that typically Apple will absolutely require, and ONLY accept, an original receipt issued by Apple or an Apple Authorized Reseller. Presumably this is the only kind Apple can authenticate against fraud since Apple is not involved in third party sales. Apple recommends that you "Keep your receipt after you buy an Apple device" --> Keep your receipt after you buy an Apple device - Apple Support

You do NOT have to be the “original” owner. In the case of removing the lock with the correct information, it can be anybody who knows the currently signed in account information. In the case of asking Apple to unlock it, as long as you have the original Apple receipt (which may well not have any personally identifying information on it) you are okay. Apple confirmed this in a conversation.

If Apple resets the device this will give you access to the device but won't restore access to the account used to lock it. There is nothing that can be done to expedite an Activation Lock request.

If you cannot get the device unlocked then read this section from the very bottom of Apple Trade In - Apple :

"Does Apple offer recycling?

Yes. Apple Trade In lets you recycle any Apple device (including devices from Apple-owned brands) at any Apple Store and on Apple for free."

You cannot.

You must have access to the account in order to remove it entirely.

See the following support document.

click here ➜ If your Apple Account is locked, not active, or disabled - Apple Support

How did this phone come to be Activation-Locked?

Did you buy a second-hand phone, only to find that it was Activation-Locked to someone else?

The All Too Common SAD Reality of Buying a Used iPad/iPhone – Apple Community

Did you log into a scammer's Apple Account, only to have the scammer lock your phone and demand ransom?

Signing Out of Your Apple Account and Into Someone Else's Account Could Have Catastrophic Consequences – Apple Community