Class won't dissapear from blackboard
It is normal for your old online classes to remain in your Blackboard account for up to two semesters. This is not currently hurting your GPA. You did receive a grade of F in the Spring semester, so that is holding your GPA down. However, if you retake the class, your new grade will replace your old grade and improve your GPA. The course should disappear from your Blackboard by the end of Fall, so you can just ignore it for now.
Let me know if you have any other questions!