delete old library

Projects Programming
1

I want to put a new library into ardinuoIDE. I was instructed to delete the old library, which is a standard arduino library but can't figure out how to do it. If I go to ~/ardinuo/library I just see the new folder I added.

want to delete: liquidCrystal.h
replace with: liquidCrystal_I2C.h

I think this is why I cannot compile my sketch.

2

If I go to ~/ardinuo/library

Ardinuo?

Libraries go in a folder named libraries, not library.