remove all references to legacy Config8888

src/device/xps/SkXPSDevice.cpp

Index: src/device/xps/SkXPSDevice.cpp
diff --git a/src/device/xps/SkXPSDevice.cpp b/src/device/xps/SkXPSDevice.cpp
index 05ab13a09cb6f4037b3da37bc5a1ac21917641f7..389db1dbe1faeafc35c0ec2f65b20f34e8f31c8b 100644
--- a/src/device/xps/SkXPSDevice.cpp
+++ b/src/device/xps/SkXPSDevice.cpp
@@ -2408,13 +2408,6 @@ void SkXPSDevice::drawDevice(const SkDraw& d, SkBaseDevice* dev,
          "Could not add layer to current visuals.");
 }
 
-#ifdef SK_SUPPORT_LEGACY_READPIXELSCONFIG
-bool SkXPSDevice::onReadPixels(const SkBitmap& bitmap, int x, int y,
-                               SkCanvas::Config8888) {
-    return false;
-}
-#endif
-
 SkBaseDevice* SkXPSDevice::onCreateDevice(const SkImageInfo&, Usage) {
 //Conditional for bug compatibility with PDF device.
 #if 0