Revert of add SkMatrix::decomposeScale

src/core/SkMatrix.cpp

Index: src/core/SkMatrix.cpp
diff --git a/src/core/SkMatrix.cpp b/src/core/SkMatrix.cpp
index 753c4dc61e0c8c7f50032c7e2d6d9be613977b51..9658177ec913e3b3e091104d31224e798532df70 100644
--- a/src/core/SkMatrix.cpp
+++ b/src/core/SkMatrix.cpp
@@ -1603,28 +1603,6 @@
     return invalid.asSkMatrix();
 }
 
-bool SkMatrix::decomposeScale(SkSize* scale, SkMatrix* remaining) const {
-    if (this->hasPerspective()) {
-        return false;
-    }
-
-    const SkScalar sx = SkVector::Length(this->getScaleX(), this->getSkewY());
-    const SkScalar sy = SkVector::Length(this->getSkewX(), this->getScaleY());
-    if (!SkScalarIsFinite(sx) || !SkScalarIsFinite(sy) ||
-        SkScalarNearlyZero(sx) || SkScalarNearlyZero(sy)) {
-        return false;
-    }
-
-    if (scale) {
-        scale->set(sx, sy);
-    }
-    if (remaining) {
-        *remaining = *this;
-        remaining->postScale(SkScalarInvert(sx), SkScalarInvert(sy));
-    }
-    return true;
-}
-
 ///////////////////////////////////////////////////////////////////////////////
 
 size_t SkMatrix::writeToMemory(void* buffer) const {