WindowServer: Remove unused AK::InlineLinkedList header includes

Userland/Services/WindowServer/Window.h

@@ -6,7 +6,6 @@
 
 #pragma once
 
-#include <AK/InlineLinkedList.h>
 #include <AK/String.h>
 #include <AK/WeakPtr.h>
 #include <LibCore/Object.h>

Userland/Services/WindowServer/WindowManager.h

@@ -8,7 +8,6 @@
 
 #include <AK/HashMap.h>
 #include <AK/HashTable.h>
-#include <AK/InlineLinkedList.h>
 #include <AK/WeakPtr.h>
 #include <LibCore/ConfigFile.h>
 #include <LibCore/ElapsedTimer.h>