Remove a lot of dead code from AXNodeObject

Source/core/accessibility/AXMediaControls.cpp

Index: Source/core/accessibility/AXMediaControls.cpp
diff --git a/Source/core/accessibility/AXMediaControls.cpp b/Source/core/accessibility/AXMediaControls.cpp
index 7b7d52f620e45deabb7f97be82b6132e6662a561..e445b5409a0cdc467165c704312497d7af60cdbb 100644
--- a/Source/core/accessibility/AXMediaControls.cpp
+++ b/Source/core/accessibility/AXMediaControls.cpp
@@ -77,22 +77,6 @@ MediaControlElementType AccessibilityMediaControl::controlType() const
     return mediaControlElementType(renderer()->node());
 }
 
-void AccessibilityMediaControl::accessibilityText(Vector<AccessibilityText>& textOrder)
-{
-    String description = accessibilityDescription();
-    if (!description.isEmpty())
-        textOrder.append(AccessibilityText(description, AlternativeText));
-
-    String title = this->title();
-    if (!title.isEmpty())
-        textOrder.append(AccessibilityText(title, AlternativeText));
-
-    String helptext = helpText();
-    if (!helptext.isEmpty())
-        textOrder.append(AccessibilityText(helptext, HelpText));
-}
-
-
 String AccessibilityMediaControl::title() const
 {
     // FIXME: the ControlsPanel container should never be visible in the