MINIFICPP-2650 - Remove unused

minifi-api/include/minifi-c/minifi-c.h

diff --git a/minifi-api/include/minifi-c/minifi-c.h b/minifi-api/include/minifi-c/minifi-c.h
index 6fd990b..1f22c90 100644
--- a/minifi-api/include/minifi-c/minifi-c.h
+++ b/minifi-api/include/minifi-c/minifi-c.h
@@ -78,7 +78,6 @@
   MinifiBool supports_expression_language;
 } MinifiDynamicPropertyDefinition;
 
-typedef struct MinifiPropertyValidator MinifiPropertyValidator;
 typedef struct MinifiFlowFile MinifiFlowFile;
 typedef struct MinifiLogger MinifiLogger;
 typedef struct MinifiProcessContext MinifiProcessContext;