If you want to delete or disable a Google Chrome Extension follow these steps...
(1) Click on the "3 horizontal lines" below the red (X) button.
(2) Then click on "Settings"
(3) Now click on "Extensions" on the left side of the page. Now you can view any extensions you have installed on Google chrome.
(4) Click on the "Trash can" to delete it from chrome or unchecked the box next to the word "Enabled" if you just want to disable it for a while.
Hope this helps! :)