First pass at removing dead vertical writing mode code.

sky/engine/core/editing/VisibleUnits.cpp

Index: sky/engine/core/editing/VisibleUnits.cpp
diff --git a/sky/engine/core/editing/VisibleUnits.cpp b/sky/engine/core/editing/VisibleUnits.cpp
index 72d9cf7bc1d1ab540808f97708afdb37c5da07dd..b750b4ad7e4ddd23f688540d7a9f5c35404ef9ed 100644
--- a/sky/engine/core/editing/VisibleUnits.cpp
+++ b/sky/engine/core/editing/VisibleUnits.cpp
@@ -885,11 +885,7 @@ static inline IntPoint absoluteLineDirectionPointToLocalPointInBlock(RootInlineB
     FloatPoint absoluteBlockPoint = containingBlock.localToAbsolute(FloatPoint());
     if (containingBlock.hasOverflowClip())
         absoluteBlockPoint -= containingBlock.scrolledContentOffset();
-
-    if (root->block().isHorizontalWritingMode())
-        return IntPoint(lineDirectionPoint - absoluteBlockPoint.x(), root->blockDirectionPointInLine());
-
-    return IntPoint(root->blockDirectionPointInLine(), lineDirectionPoint - absoluteBlockPoint.y());
+    return IntPoint(lineDirectionPoint - absoluteBlockPoint.x(), root->blockDirectionPointInLine());
 }
 
 VisiblePosition previousLinePosition(const VisiblePosition &visiblePosition, int lineDirectionPoint, EditableType editableType)