remove reference to skia vertical-text (never set/used)

Test: make

See https://bugs.chromium.org/p/skia/issues/detail?id=8487

Change-Id: I185ffb3251aa154da55b0615f5837d9d090e5963

libs/hwui/hwui/MinikinSkia.cpp

@@ -141,7 +141,7 @@ uint32_t MinikinFontSkia::packPaintFlags(const SkPaint* paint) {
     // select only flags that might affect text layout
     flags &= (SkPaint::kAntiAlias_Flag | SkPaint::kFakeBoldText_Flag | SkPaint::kLinearText_Flag |
               SkPaint::kSubpixelText_Flag | SkPaint::kEmbeddedBitmapText_Flag |
-              SkPaint::kAutoHinting_Flag | SkPaint::kVerticalText_Flag);
+              SkPaint::kAutoHinting_Flag);
     flags |= (hinting << 16);
     return flags;
 }