Remove extraneous blank lines before block-closing braces

These are useless and distracting.  We wouldn't have written the code
with them to begin with, so there's no reason to keep them.

Author: Justin Pryzby <pryzby@telsasoft.com>
Discussion: https://postgr.es/m/20220411020336.GB26620@telsasoft.com
Discussion: https://postgr.es/m/attachment/133167/0016-Extraneous-blank-lines.patch

src/backend/access/nbtree/nbtsplitloc.c

@@ -35,7 +35,6 @@ typedef struct
 	/* split point identifying fields (returned by _bt_findsplitloc) */
 	OffsetNumber firstrightoff; /* first origpage item on rightpage */
 	bool		newitemonleft;	/* new item goes on left, or right? */
-
 } SplitPoint;
 
 typedef struct

src/backend/access/nbtree/nbtutils.c

@@ -2116,14 +2116,12 @@ btoptions(Datum reloptions, bool validate)
 		offsetof(BTOptions, vacuum_cleanup_index_scale_factor)},
 		{"deduplicate_items", RELOPT_TYPE_BOOL,
 		offsetof(BTOptions, deduplicate_items)}
-
 	};
 
 	return (bytea *) build_reloptions(reloptions, validate,
 									  RELOPT_KIND_BTREE,
 									  sizeof(BTOptions),
 									  tab, lengthof(tab));
-
 }
 
 /*
@@ -2591,7 +2589,6 @@ _bt_check_natts(Relation rel, bool heapkeyspace, Page page, OffsetNumber offnum)
 
 			/* Use generic heapkeyspace pivot tuple handling */
 		}
-
 	}
 
 	/* Handle heapkeyspace pivot tuples (excluding minus infinity items) */