Remove some unused functions in core

Source/core/editing/EditCommand.cpp

Index: Source/core/editing/EditCommand.cpp
diff --git a/Source/core/editing/EditCommand.cpp b/Source/core/editing/EditCommand.cpp
index 0953c4e60639a24362aea6b9295ea6ac0b9be1a9..6fc9c6917fe17a39efbf0e980654bbf9f911e63c 100644
--- a/Source/core/editing/EditCommand.cpp
+++ b/Source/core/editing/EditCommand.cpp
@@ -44,16 +44,6 @@ EditCommand::EditCommand(Document& document)
     setEndingSelection(m_startingSelection);
 }
 
-EditCommand::EditCommand(Document* document, const VisibleSelection& startingSelection, const VisibleSelection& endingSelection)
-    : m_document(document)
-    , m_parent(nullptr)
-{
-    ASSERT(m_document);
-    ASSERT(m_document->frame());
-    setStartingSelection(startingSelection);
-    setEndingSelection(endingSelection);
-}
-
 EditCommand::~EditCommand()
 {
 }
@@ -83,11 +73,6 @@ void EditCommand::setStartingSelection(const VisibleSelection& selection)
     }
 }
 
-void EditCommand::setStartingSelection(const VisiblePosition& position)
-{
-    setStartingSelection(VisibleSelection(position));
-}
-
 void EditCommand::setEndingSelection(const VisibleSelection& selection)
 {
     for (EditCommand* command = this; command; command = command->m_parent) {