Don't include home screen app in usage stats

[aravindsagar]

Why not?
This will possibly skew the data, since this is mostly used for launching other apps. Still the time spent on the home screen will not be insignificant, and it can make the usage of other categories look smaller in reports.

What's the problem?
Overall phone usage time will not match the sum of usage times of the categories/apps in the report.

I'd like to get everyone's inputs on this.