Remove bounding box retrieval from Canvas which is not used.

The bounding box information is not used for drawing glyphs, so
removing them from Canvas.

Bug: 169114687
Test: hwui_unit_tests
Change-Id: I512717cd00fe56e5b74fcc32fbdf2319e273074e
diff --git a/libs/hwui/SkiaCanvas.h b/libs/hwui/SkiaCanvas.h
index 1df2b26..2cb850c8 100644
--- a/libs/hwui/SkiaCanvas.h
+++ b/libs/hwui/SkiaCanvas.h
@@ -161,8 +161,7 @@
     void drawDrawable(SkDrawable* drawable) { mCanvas->drawDrawable(drawable); }
 
     virtual void drawGlyphs(ReadGlyphFunc glyphFunc, int count, const Paint& paint, float x,
-                            float y, float boundsLeft, float boundsTop, float boundsRight,
-                            float boundsBottom, float totalAdvance) override;
+                            float y, float totalAdvance) override;
     virtual void drawLayoutOnPath(const minikin::Layout& layout, float hOffset, float vOffset,
                                   const Paint& paint, const SkPath& path, size_t start,
                                   size_t end) override;