remove (now unused) SkDivBits

include/core/SkMath.h

Index: include/core/SkMath.h
diff --git a/include/core/SkMath.h b/include/core/SkMath.h
index abb685f6daa36b26b102894305e4d012587ca2b3..799939039c087659014b42b0bf62e861d2d55cc4 100644
--- a/include/core/SkMath.h
+++ b/include/core/SkMath.h
@@ -53,13 +53,6 @@ static inline int32_t SkMulDiv(int32_t numer1, int32_t numer2, int32_t denom) {
 }
 
 /**
- *  Computes (numer1 << shift) / denom in full 64 intermediate precision.
- *  It is an error for denom to be 0. There is no special handling if
- *  the result overflows 32bits.
- */
-int32_t SkDivBits(int32_t numer, int32_t denom, int shift);
-
-/**
  *  Return the integer square root of value, with a bias of bitBias
  */
 int32_t SkSqrtBits(int32_t value, int bitBias);