Revert "Implement scrim method"

This reverts commit d849ef084c.

Reason for revert: not needed

I was too eager to merge this CL. It turns out all I need is these
three constants and doesn't actually need the aidl change.

public static final int MAIN_COLOR_LIGHT = 0xffdadce0;
public static final int MAIN_COLOR_DARK = 0xff202124;
public static final int MAIN_COLOR_REGULAR = 0xff000000;

Change-Id: Iafd539a06455ba0878a6d3750f3c7194f8919fbf

go/quickstep/src/com/android/quickstep/TouchInteractionService.java

@@ -92,11 +92,6 @@ public class TouchInteractionService extends Service {
             // To be implemented
         }
 
-        @Override
-        public void onScrimColorsChanged(int color, int type) {
-
-        }
-
         /** Deprecated methods **/
         public void onQuickStep(MotionEvent motionEvent) { }
 

quickstep/recents_ui_overrides/src/com/android/quickstep/TouchInteractionService.java

@@ -176,11 +176,6 @@ public class TouchInteractionService extends Service implements
             mSystemUiStateFlags = stateFlags;
         }
 
-        @Override
-        public void onScrimColorsChanged(int color, int type) {
-
-        }
-
         /** Deprecated methods **/
         public void onQuickStep(MotionEvent motionEvent) { }