How does Hate build up like that? It's just an app, that you can choose to completely ignore 😀
Anyway:
Step 1
Right click on the iBooks icon in the dock, and click on Remove from Dock.
Step 2
Drag iBooks (in your Applications folder) to the trash. You likely will be asked to authenticate, so provide your admin password at that time.
Step 3
Empty the trash. (don't have Mavericks at the mom - so if you can't easily drag to the trash, then an alternate plan would be to make a new folder for "Junk I refuse to use", and drag the iBooks app to that folder - and that's the last step.
Step 4 (optional)
Get on with your life. 😀 (May not be a necessary step, but still good.)