LibWeb: Remove unneeded LibGUI include in Window.cpp

Userland/Libraries/LibWeb/HTML/Window.cpp

@@ -5,7 +5,6 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
-#include <LibGUI/DisplayLink.h>
 #include <LibJS/Runtime/AbstractOperations.h>
 #include <LibJS/Runtime/FunctionObject.h>
 #include <LibWeb/Bindings/IDLAbstractOperations.h>