By Jackie Annett She’s one of the most memorable baddies in soap opera history, but could Coronation Street ‘s Tracy Barlow soon be taking her last steps on the cobbles? In spoilers for next week, on screen hubby Steve McDonald reads a letter from his footballing hero Tommy Orpington inviting Tracy (played by Kate Ford ) to move with him to Spain. There’s no doubt Tracy has had some impressive storylines during her 22 years on the soap. There was the time she pretended she had slept with Roy Cropper and said he was Amy’s father not Steve McDonald’s. Not to mention the fact she tried to sell he…