Remove some unused functions in core

Source/core/events/EventTarget.cpp

Index: Source/core/events/EventTarget.cpp
diff --git a/Source/core/events/EventTarget.cpp b/Source/core/events/EventTarget.cpp
index b3b1d6ba7b234c825f68657529b92062a8a4c0b4..064eef6d095e956e325431338e475d7efafe1193 100644
--- a/Source/core/events/EventTarget.cpp
+++ b/Source/core/events/EventTarget.cpp
@@ -94,12 +94,6 @@ bool EventTarget::addEventListener()
     return false;
 }
 
-bool EventTarget::addEventListener(const AtomicString& eventType)
-{
-    UseCounter::count(executionContext(), UseCounter::AddEventListenerOneArgument);
-    return false;
-}
-
 bool EventTarget::addEventListener(const AtomicString& eventType, PassRefPtr<EventListener> listener, bool useCapture)
 {
     // FIXME: listener null check should throw TypeError (and be done in
@@ -124,12 +118,6 @@ bool EventTarget::removeEventListener()
     return false;
 }
 
-bool EventTarget::removeEventListener(const AtomicString& eventType)
-{
-    UseCounter::count(executionContext(), UseCounter::RemoveEventListenerOneArgument);
-    return false;
-}
-
 bool EventTarget::removeEventListener(const AtomicString& eventType, PassRefPtr<EventListener> listener, bool useCapture)
 {
     // FIXME: listener null check should throw TypeError (and be done in