Remove direct includes of SkMath.h

None of these seem to actually use the symbols there.

Skia plans to remove SkMath.h from the public API.

Change-Id: I03a9a4cd2f3eaf7a943e408c16e7c3b9db29c343

libs/hwui/RecordingCanvas.cpp

@@ -34,7 +34,6 @@
 #include "SkImageFilter.h"
 #include "SkImageInfo.h"
 #include "SkLatticeIter.h"
-#include "SkMath.h"
 #include "SkPaint.h"
 #include "SkPicture.h"
 #include "SkRRect.h"

libs/hwui/SkiaInterpolator.cpp

@@ -16,7 +16,6 @@
 
 #include "SkiaInterpolator.h"
 
-#include "include/core/SkMath.h"
 #include "include/core/SkScalar.h"
 #include "include/core/SkTypes.h"
 #include "include/private/SkFixed.h"

libs/hwui/jni/BitmapFactory.cpp

@@ -14,7 +14,6 @@
 #include "SkColorSpace.h"
 #include "SkEncodedImageFormat.h"
 #include "SkImageInfo.h"
-#include "SkMath.h"
 #include "SkPaint.h"
 #include "SkPixelRef.h"
 #include "SkRect.h"

libs/hwui/jni/Graphics.cpp

@@ -14,7 +14,6 @@
 #include "SkColorSpace.h"
 #include "SkFontMetrics.h"
 #include "SkImageInfo.h"
-#include "SkMath.h"
 #include "SkPixelRef.h"
 #include "SkPoint.h"
 #include "SkRect.h"