Finish backport

Author: IMS212

src/main/java/net/coderbot/iris/mixin/gui/MixinGui.java

@@ -27,9 +27,6 @@
 public class MixinGui {
 	@Shadow @Final private Minecraft minecraft;
 
-	@Shadow
-	@Final
-	private DebugScreenOverlay debugOverlay;
 
 	@Inject(method = "render", at = @At("HEAD"), cancellable = true)
 	public void iris$handleHudHidingScreens(GuiGraphics pGui0, float pFloat1, CallbackInfo ci) {