Revert 124385 - Allows tab dragging when maximized on aura. To fix it I made it so

ash/wm/property_util.h

Index: ash/wm/property_util.h
===================================================================
--- ash/wm/property_util.h	(revision 124386)
+++ ash/wm/property_util.h	(working copy)
@@ -10,8 +10,6 @@
 
 namespace aura {
 class Window;
-template<typename T>
-struct WindowProperty;
 }
 
 namespace gfx {
@@ -39,16 +37,6 @@
 // Toggles the maximized state of the specified window.
 ASH_EXPORT void ToggleMaximizedState(aura::Window* window);
 
-ASH_EXPORT extern const aura::WindowProperty<bool>* const
-    kWindowTrackedByWorkspaceSplitPropKey;
-
-// Sets whether the specified window is tracked by workspace code. Default is
-// true. If set to false the workspace does not switch the current workspace,
-// nor does it attempt to impose constraints on the bounds of the window. This
-// is intended for tab dragging.
-ASH_EXPORT void SetTrackedByWorkspace(aura::Window* window, bool value);
-ASH_EXPORT bool GetTrackedByWorkspace(aura::Window* window);
-
 }
 
 #endif  // ASH_WM_PROPERTY_UTIL_H_