Google analytics allows multiple user access to the same account, so you can share your account with someone else or some other person can share with you.
How to delete any google analytics account?
Step#1: Remove analytics tracking code from all pages of your site or app.
Step#2: login to analytics account
Step#3: Click on the admin tab
Step#4: In the account column, select the specific account from the dropdown menu.
Step#5: Click Account Settings from the account column
Step#6: Click Move account to Trash Can
How to Delete Yourself From a shared Analytics Account
Step#1: Sign in to analytics account
Step#2: Select the admin tab
Step#3: In the Account Column, select the specific account from the dropdown menu.
Step#4: Navigate to User Management (Account >> user management)
Step#5: Click on Remove Myself From This Account
See the original question: https://www.en.advertisercommunity.com/t5/Account-Access-Management/Can-t-remove-user-email-address-from-analytics/td-p/486267