Remove unused #include's from contrib, pl, test .c files

as determined by IWYU

Similar to commit dbbca2cf29, but for contrib, pl, and src/test/.

Reviewed-by: Alvaro Herrera <alvherre@alvh.no-ip.org>
Discussion: https://www.postgresql.org/message-id/flat/0df1d5b1-8ca8-4f84-93be-121081bde049%40eisentraut.org

contrib/bloom/blcost.c

@@ -13,7 +13,6 @@
 #include "postgres.h"
 
 #include "bloom.h"
-#include "fmgr.h"
 #include "utils/selfuncs.h"
 
 /*

contrib/bloom/blinsert.c

@@ -16,11 +16,9 @@
 #include "access/generic_xlog.h"
 #include "access/tableam.h"
 #include "bloom.h"
-#include "catalog/index.h"
 #include "miscadmin.h"
+#include "nodes/execnodes.h"
 #include "storage/bufmgr.h"
-#include "storage/indexfsm.h"
-#include "storage/smgr.h"
 #include "utils/memutils.h"
 #include "utils/rel.h"
 

contrib/bloom/blscan.c

@@ -15,11 +15,7 @@
 #include "access/relscan.h"
 #include "bloom.h"
 #include "miscadmin.h"
-#include "pgstat.h"
 #include "storage/bufmgr.h"
-#include "storage/lmgr.h"
-#include "utils/memutils.h"
-#include "utils/rel.h"
 
 /*
  * Begin scan of bloom index.

contrib/bloom/blutils.c

@@ -17,14 +17,11 @@
 #include "access/generic_xlog.h"
 #include "access/reloptions.h"
 #include "bloom.h"
-#include "catalog/index.h"
 #include "commands/vacuum.h"
-#include "miscadmin.h"
 #include "storage/bufmgr.h"
-#include "storage/freespace.h"
 #include "storage/indexfsm.h"
-#include "storage/lmgr.h"
 #include "utils/memutils.h"
+#include "varatt.h"
 
 /* Signature dealing macros - note i is assumed to be of type int */
 #define GETWORD(x,i) ( *( (BloomSignatureWord *)(x) + ( (i) / SIGNWORDBITS ) ) )

contrib/bloom/blvacuum.c

@@ -14,13 +14,9 @@
 
 #include "access/genam.h"
 #include "bloom.h"
-#include "catalog/storage.h"
 #include "commands/vacuum.h"
-#include "miscadmin.h"
-#include "postmaster/autovacuum.h"
 #include "storage/bufmgr.h"
 #include "storage/indexfsm.h"
-#include "storage/lmgr.h"
 
 
 /*

contrib/bloom/blvalidate.c

@@ -20,8 +20,6 @@
 #include "catalog/pg_opclass.h"
 #include "catalog/pg_opfamily.h"
 #include "catalog/pg_type.h"
-#include "utils/builtins.h"
-#include "utils/lsyscache.h"
 #include "utils/regproc.h"
 #include "utils/syscache.h"