Remove a stray "pgrminclude" annotation

We don't use those anymore.  Fix for commit 8492feb.

Author: petere

src/backend/access/gin/gininsert.c

@@ -28,7 +28,7 @@
 #include "pgstat.h"
 #include "storage/bufmgr.h"
 #include "storage/predicate.h"
-#include "tcop/tcopprot.h"		/* pgrminclude ignore */
+#include "tcop/tcopprot.h"
 #include "utils/datum.h"
 #include "utils/memutils.h"
 #include "utils/rel.h"