Intimidation/Instill doubt gone?

[deadreaver777]

Hey everyone I'm a rogue, and last time I played was about two years ago, and at that time I had the intimidation skill on my hotbar. The skill actually still shows there, but when I hit it, nothing happens. I looked in my skill list, and I see neither this nor instill doubt are in my skill book. Did something get changed in regards to those skills?