Remove code that does nothing

Test: CtsGraphicsTestCases

When the comment was written, "the default" referred to
GraphicsJNI::colorSpaceForType, which was either SRGB or null, depending
on a build flag. In If7b1c00ad889446658f98e9ad644869e2eeabcdb, we
changed it to "decodeInfo.refColorSpace", but since bitmapInfo was just
assigned decodeInfo, it already has the same SkColorSpace, so this does
nothing. Remove the code and the comment.

Change-Id: Ib661621e30a6432707bb6894ca5334fba8eca81e
diff --git a/core/jni/android/graphics/BitmapFactory.cpp b/core/jni/android/graphics/BitmapFactory.cpp
index 7ef30f7..79bfa17 100644
--- a/core/jni/android/graphics/BitmapFactory.cpp
+++ b/core/jni/android/graphics/BitmapFactory.cpp
@@ -360,13 +360,7 @@
     const SkImageInfo decodeInfo = SkImageInfo::Make(size.width(), size.height(),
             decodeColorType, alphaType, decodeColorSpace);
 
-    // For wide gamut images, we will leave the color space on the SkBitmap.  Otherwise,
-    // use the default.
     SkImageInfo bitmapInfo = decodeInfo;
-    if (decodeInfo.colorSpace() && decodeInfo.colorSpace()->isSRGB()) {
-        bitmapInfo = bitmapInfo.makeColorSpace(decodeInfo.refColorSpace());
-    }
-
     if (decodeColorType == kGray_8_SkColorType) {
         // The legacy implementation of BitmapFactory used kAlpha8 for
         // grayscale images (before kGray8 existed).  While the codec