remove the creation of 'vso tasks rotate' autostart file

[nellfs]

Currently vso creates a file that ran vso tasks rotate in /home/user/.config/autostart/

vanilla-system-operator/core/tasks.go

Lines 271 to 303 in 05757fb

	// makeTasksRotatorAutostart creates an autostart file for vso if it doesn't exist
	func makeTasksRotatorAutostart() error {
	curUser, err := getRealUser()
	if err != nil {
	fmt.Println("Cannot determine real user. Autostart will not be created.")
	return err
	}
	autostartFolder := "/home/" + curUser + "/.config/autostart"
	autostartFile := autostartFolder + "/vso.desktop"
	if _, err := os.Stat(autostartFile); os.IsNotExist(err) {
	fmt.Println("Creating vso autostart file for user in " + autostartFile)
	err = os.MkdirAll(autostartFolder, 0755)
	if err != nil {
	return err
	}
	file, err := os.Create(autostartFile)
	if err != nil {
	return err
	}
	defer file.Close()
	_, err = file.WriteString("[Desktop Entry]\nType=Application\nName=vso\nExec=/usr/bin/vso rotate-tasks\n")
	if err != nil {
	return err
	}
	}
	return nil
	}

There are a few problems with this:

1. The created file uses the old command for vso tasks rotating (so the file actually doesn't work currently).
   Core dumps gets stored in random places desktop-image#141

2. Writing a file in the user's home directory makes it hard to update; we would need to directly modify the user's home to correct the error mentioned above.

---

The best thing to do in this case would be to create a systemd service to start vso tasks rotate as mentioned by @taukakao
Vanilla-OS/desktop-image#141

In fact I already have an issue and a PR open to solve this, so this issue complements it.