In order to earn intensity minutes credit, you must reach or exceed 10 consecutive minutes where either your step count rate or heart rate is elevated above the threshold that is considered moderate intensity.
And can I delete them from the app screen?
Hm, if you are complaining that you got no Intensity Minutes, then what exactly you want to delete, when there are no IMs? But if you mean removing the IM pane, then just slide it to the side, and it will be gone. Or tap the button Edit My Day at the bottom and remove any panes you do not wish to see on the My Day screen.
