Removed duplicated include

Change-Id: Ibfea1c4a87a719ba92111787fd74a6176f8b6458
Reviewed-on: https://gerrit.libreoffice.org/52850Reviewed-by: Julien Nabet <serval2412@yahoo.fr>
Tested-by: Jenkins <ci@libreoffice.org>

dbaccess/source/core/api/RowSetCache.cxx

@@ -30,7 +30,6 @@
 #include <core_resource.hxx>
 #include <strings.hrc>
 #include <strings.hxx>
-#include <core_resource.hxx>
 #include <stringconstants.hxx>
 
 #include <com/sun/star/sdbc/ColumnValue.hpp>