Remove obsolete header.

Change-Id: I7cd358845a048e6eb6df9bd42d022357e553981c
Reviewed-on: https://gerrit.libreoffice.org/47355Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Jens Carl <j.carl43@gmx.de>

test/source/sheet/tablevalidation.cxx

@@ -7,7 +7,6 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  */
 
-#include <array>
 #include <test/sheet/tablevalidation.hxx>
 
 #include <com/sun/star/beans/XPropertySet.hpp>