test/sq-poll-share: unlink file on successful exit too

Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/test/sq-poll-share.c b/test/sq-poll-share.c
index 966f443..a1beafe 100644
--- a/test/sq-poll-share.c
+++ b/test/sq-poll-share.c
@@ -160,6 +160,8 @@
 		ios += BUFFERS;
 	}
 
+	if (fname != argv[1])
+		unlink(fname);
 	return 0;
 err:
 	if (fname != argv[1])