remove SK_IGNORE_IMAGE_PRESCALE flag (no longer used)

git-svn-id: http://skia.googlecode.com/svn/trunk/src@11153 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/core/SkBitmapProcState.cpp b/core/SkBitmapProcState.cpp
index c1874a9..6ab3126 100644
--- a/core/SkBitmapProcState.cpp
+++ b/core/SkBitmapProcState.cpp
@@ -290,7 +290,6 @@
 
     fFilterLevel = paint.getFilterLevel();
 
-#ifndef SK_IGNORE_IMAGE_PRESCALE
     // possiblyScaleImage will look to see if it can rescale the image as a
     // preprocess; either by scaling up to the target size, or by selecting
     // a nearby mipmap level.  If it does, it will adjust the working
@@ -298,7 +297,6 @@
     // quality to avoid re-filtering an already perfectly scaled image.
 
     this->possiblyScaleImage();
-#endif
 
     bool trivialMatrix = (fInvMatrix.getType() & ~SkMatrix::kTranslate_Mask) == 0;
     bool clampClamp = SkShader::kClamp_TileMode == fTileModeX &&