C++14: Remove unused make_unique.h

Also removes header references now that we are in C++14, this is
built-in to the std

qa/common/test_lib_table.cpp

@@ -1,7 +1,7 @@
 /*
  * This program source code file is part of KiCad, a free EDA CAD application.
  *
- * Copyright (C) 2018 KiCad Developers, see CHANGELOG.TXT for contributors.
+ * Copyright (C) 2018-2019 KiCad Developers, see CHANGELOG.TXT for contributors.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -35,8 +35,6 @@
 // Code under test
 #include <lib_table_base.h>
 
-#include <make_unique.h>
-
 
 /**
  * A concrete implementation of #LIB_TABLE_ROW that implements