initdb: only recommend pg_ctl to start the server

Previously we mentioned the 'postgres' binary method as well.

src/bin/initdb/initdb.c

@@ -3641,11 +3641,7 @@ main(int argc, char *argv[])
 	get_parent_directory(bin_dir);
 
 	printf(_("\nSuccess. You can now start the database server using:\n\n"
-			 "    %s%s%spostgres%s -D %s%s%s\n"
-			 "or\n"
 			 "    %s%s%spg_ctl%s -D %s%s%s -l logfile start\n\n"),
-	   QUOTE_PATH, bin_dir, (strlen(bin_dir) > 0) ? DIR_SEP : "", QUOTE_PATH,
-		   QUOTE_PATH, pgdata_native, QUOTE_PATH,
 	   QUOTE_PATH, bin_dir, (strlen(bin_dir) > 0) ? DIR_SEP : "", QUOTE_PATH,
 		   QUOTE_PATH, pgdata_native, QUOTE_PATH);