simoop: reduce verbosity about filler threads

These details aren't interesting.

Signed-off-by: Chris Mason <clm@fb.com>
diff --git a/simoop.c b/simoop.c
index 097271e..557c701 100644
--- a/simoop.c
+++ b/simoop.c
@@ -1511,7 +1511,6 @@
 void *filler_thread(void *arg)
 {
 	struct filler *filler = arg;
-	fprintf(stderr, "filling %s start %lu num %lu\n", filler->path, filler->seq_start, filler->seq_num);
 	make_dirs(filler->path);
 	make_files(filler->path, filler->seq_start, filler->seq_num);
 	free(filler);
@@ -1540,6 +1539,7 @@
 	fprintf(stderr, "Creating working files\n");
 	this_tid = tids;
 	for (i = 0; i < total_paths; i++) {
+		fprintf(stderr, "filling %s\n", paths[i]);
 		for (j = 0; j < FILES_SPLIT; j++) {
 			pthread_t tid;
 			struct filler *filler;