You cannot remove Items 1, 2 and 3 from your template. When you use your template in your video project, they become Play, Chapters and Sub-titles respectively. (Sub-titles only appears if you have introduced sub-titles during the editing stage.) Chapters will always appear because PD by default creates one chapter at the beginning of your project, and although you cannot get rid of the word, you can hide it.
When your new template comes up in your project, make sure you are in Author mode, then you can change "My videos" to whatever you want. If you don't want chapters double-click on Chapters and replace it by one or two spaces. This effectively hides the Chapters function. Your menu should then just show your title and Play.
You might also find these notes helpful.