Emulator: remove hardcoded isEmulator() logic in ImageWallpaper

Emulator can use host GPU for rendering and supports GLES 2 already.
The isEmulator() logic is not only unnecessary but also causes the
launcher to have black background.

BUG: 33788018
Change-Id: Ib6d942490e8808e202c444f96becec1b75953838

packages/SystemUI/src/com/android/systemui/ImageWallpaper.java

@@ -80,9 +80,7 @@ public class ImageWallpaper extends WallpaperService {
 
         //noinspection PointlessBooleanExpression,ConstantConditions
         if (FIXED_SIZED_SURFACE && USE_OPENGL) {
-            if (!isEmulator()) {
-                mIsHwAccelerated = ActivityManager.isHighEndGfx();
-            }
+            mIsHwAccelerated = ActivityManager.isHighEndGfx();
         }
     }
 
@@ -93,10 +91,6 @@ public class ImageWallpaper extends WallpaperService {
         }
     }
 
-    private static boolean isEmulator() {
-        return "1".equals(SystemProperties.get(PROPERTY_KERNEL_QEMU, "0"));
-    }
-
     @Override
     public Engine onCreateEngine() {
         mEngine = new DrawableEngine();