rasqal.h: Visual Studio 2013 chokes on duplicate RASQAL_API

Author: Michael Stahl

src/rasqal.h.in

@@ -1473,7 +1473,7 @@ typedef enum {
 
 RASQAL_API
 int rasqal_query_results_formats_check2(rasqal_world* world, const char *name, raptor_uri* uri, const char *mime_type, int flags);
-RASQAL_API RASQAL_API RASQAL_DEPRECATED
+RASQAL_API RASQAL_DEPRECATED
 int rasqal_query_results_formats_check(rasqal_world* world, const char *name, raptor_uri* uri, const char *mime_type, int flags);
 RASQAL_API
 rasqal_query_results_formatter* rasqal_new_query_results_formatter(rasqal_world* world, const char *name, const char *mime_type, raptor_uri* format_uri);