I want to get rid of the shadow

I using graphics as an intermediate option. In the past, i could use shadow options by removing them, so the frame was better, but now If there’s a little delay, the frame will fall off a lot. Is there a way to keep the graphics as they are and remove shadow options? It’s like ‘graphics option shadow quality=’

If you go into:
User -> Documents -> Heroes of the Storm.

There is a file called 'Variables" in here.

You can edit some things that are not possible to edit in the settings in this Variables.txt