Don't include execnodes.h in brin.h or gin.h

These headers don't need execnodes.h for anything.  I think they never
have.

Discussion: https://postgr.es/m/202510021240.ptc2zl5cvwen@alvherre.pgsql

src/backend/access/brin/brin_bloom.c

@@ -126,6 +126,7 @@
 #include "catalog/pg_am.h"
 #include "catalog/pg_type.h"
 #include "common/hashfn.h"
+#include "port/pg_bitutils.h"
 #include "utils/fmgrprotos.h"
 #include "utils/rel.h"
 

src/include/access/brin.h

@@ -10,7 +10,8 @@
 #ifndef BRIN_H
 #define BRIN_H
 
-#include "nodes/execnodes.h"
+#include "storage/block.h"
+#include "storage/dsm.h"
 #include "storage/shm_toc.h"
 #include "utils/relcache.h"
 

src/include/access/gin.h

@@ -12,9 +12,9 @@
 
 #include "access/xlogreader.h"
 #include "lib/stringinfo.h"
-#include "nodes/execnodes.h"
-#include "storage/shm_toc.h"
 #include "storage/block.h"
+#include "storage/dsm.h"
+#include "storage/shm_toc.h"
 #include "utils/relcache.h"
 
 

src/include/access/gin_private.h

@@ -13,6 +13,7 @@
 #include "access/amapi.h"
 #include "access/gin.h"
 #include "access/ginblock.h"
+#include "access/htup_details.h"
 #include "access/itup.h"
 #include "common/int.h"
 #include "catalog/pg_am_d.h"