Genetically engineered corn has eliminated an insecticide.

 So, are you okay with less insect poison and not okay with more corn with edited DNA? Check out the chart. BT corn (resistant by design to a specific bacteria) is the main maize grown now and all that insect poison has disappeared. 

 Item "B" in the picture from Nature compares BT and non-BT resistant corn.

The chart on insecticide use is from Watts Up With That.
The insecticide disappears from the data in 2010.