In the latest iTunes release, there has been quite a few tweaks to the interface. One option that has moved is the change view in playlist. This post describes how to change this.
The latest version defaults all playlist views to “playlist”, which is fine for most people, but I am not a fan of cover art so the “songs view” (which is basically a list) is my favorite.
To change this click on “View” > “View as” > “Songs”. After songs is selected, you should see just a list of songs.