It is very easy to remove "All" and have a view scheme for just Comedy. When setting up the view scheme do the following:
Step One: Create View Items - Select "Empty" (This is what removes "All" from showing)
Step Two: Name Scheme - Enter "Comedy"
Step Three: Modify Properties - I use Image:Video and Tree position:Automatic with the other boxes selected
Step Four: Pick Files to Show - "Sort: Name" and "Genre: Comedy"
Edit: I just saw that you wanted a search list scheme. I don't think you can get rid of the "All" with a search list scheme. However, you can create a view for Comedy, Action, etc. as I showed above. Used tabbed split views and have a tab for Comedy, a tab for Action, etc.