-Werror,-Wunused-macros (clang-cl)

Change-Id: I53b736d8b243f6e9da09856e0729b8702c4167d2
Reviewed-on: https://gerrit.libreoffice.org/60323
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

connectivity/source/drivers/mysqlc/mysqlc_preparedstatement.cxx

@@ -32,10 +32,6 @@
 
 #include <stdio.h>
 
-#ifdef _MSC_VER
-#define snprintf _snprintf
-#endif
-
 using namespace connectivity::mysqlc;
 using namespace com::sun::star::uno;
 using namespace com::sun::star::lang;