podman events --format: fix duplicated newline

The --format changes caused a duplicated newline.
PR #15678 should have a test for this.

Signed-off-by: Paul Holzinger <pholzing@redhat.com>

cmd/podman/system/events.go

@@ -117,7 +117,6 @@ func eventsCmd(cmd *cobra.Command, _ []string) error {
 				if err := rpt.Execute(event); err != nil {
 					return err
 				}
-				os.Stdout.WriteString("\n")
 			default:
 				fmt.Println(event.ToHumanReadable(!noTrunc))
 			}