Get rid of unused member function toNormalizedRange() from FrameSelection and VisibleSelection class

Source/core/editing/VisibleSelection.cpp

Index: Source/core/editing/VisibleSelection.cpp
diff --git a/Source/core/editing/VisibleSelection.cpp b/Source/core/editing/VisibleSelection.cpp
index fd392e5a13ab52778b067583cf0961465ee7f476..07f31d71633f849de323a61323417e1b88249219 100644
--- a/Source/core/editing/VisibleSelection.cpp
+++ b/Source/core/editing/VisibleSelection.cpp
@@ -240,11 +240,6 @@ bool VisibleSelection::intersectsNode(Node* node) const
     return Range::intersectsNode(node, start, end, exceptionState) && !exceptionState.hadException();
 }
 
-PassRefPtrWillBeRawPtr<Range> VisibleSelection::toNormalizedRange() const
-{
-    return createRange(toNormalizedEphemeralRange());
-}
-
 template <typename Strategy>
 static EphemeralRangeTemplate<Strategy> normalizeRangeAlgorithm(const EphemeralRangeTemplate<Strategy>& range)
 {