Make SkGraphics::Term a no-op, stop calling it.

I'd remove it entirely but Android is calling it explicitly.

BUG=skia:4259

Committed: https://skia.googlesource.com/skia/+/925979f733fe8e70d84627147dee04d030423349

Review URL: https://codereview.chromium.org/1329853005
diff --git a/include/core/SkPaint.h b/include/core/SkPaint.h
index 0c071ad..2090ed2 100644
--- a/include/core/SkPaint.h
+++ b/include/core/SkPaint.h
@@ -289,7 +289,7 @@
     SkFilterQuality getFilterQuality() const {
         return (SkFilterQuality)fBitfields.fFilterQuality;
     }
-    
+
     /**
      *  Set the filter quality. This affects the quality (and performance) of
      *  drawing scaled images.
@@ -1046,8 +1046,6 @@
      */
     SkColor computeLuminanceColor() const;
 
-    static void Term();
-
     enum {
         /*  This is the size we use when we ask for a glyph's path. We then
          *  post-transform it as we draw to match the request.
@@ -1090,7 +1088,6 @@
     friend class SkAutoGlyphCacheNoGamma;
     friend class SkCanvas;
     friend class SkDraw;
-    friend class SkGraphics; // So Term() can be called.
     friend class SkPDFDevice;
     friend class GrBitmapTextContext;
     friend class GrAtlasTextContext;