Remove/Comment time.Sleep in integration tests

Remove what seems unnecessary time.Sleep (1 second even) and comment the
ones that seemed necessary.

Signed-off-by: Vincent Demeester <vincent@sbr.pm>
Upstream-commit: 799d9605d6d37a0f5c559b0325d924ad183ff4ee
Component: engine

components/engine/integration-cli/docker_cli_stats_test.go

@@ -11,9 +11,7 @@ import (
 func (s *DockerSuite) TestCliStatsNoStream(c *check.C) {
 	out, _ := dockerCmd(c, "run", "-d", "busybox", "top")
 	id := strings.TrimSpace(out)
-	if err := waitRun(id); err != nil {
-		c.Fatalf("error waiting for container to start: %v", err)
-	}
+	c.Assert(waitRun(id), check.IsNil)
 
 	statsCmd := exec.Command(dockerBinary, "stats", "--no-stream", id)
 	chErr := make(chan error)