Hi,
Could you please confirm, whether you want to delete the column from home page or you want to delete the row from home page.
If you want to delete Row from home page, you can do it manually only (as Sweta mentioned).
If you want to delete Column from home page you need to follow below step-
1. Go to Web Interface Report --> then go to Edit Search option.
2. There is one option "Choose columns to be displayed" you can select only those column which you want to show in Web Interface Report into homepage.