Easy. If you want all of the transitions on a track or the following transitions on a track to be removed, select the A/B button (timeline mode) on a transition, change it to Cut (no fade), the first item on the menu when you click on the A/B button. Click on it again, but this time select one of the two selects to "Apply to all of the objects in the track" or "Apply to all of the following objects......"
If there are some that you don't want to change, then this becomes more complicated and you drag those (left and right objects) down to another track temporarily, apply the Cut (no fade) on the first track, then move all of the others back up.
I don't know if these commands are in the basic version of MEP. I have Plus/Premium.