You have to go to the Question Topics area to the left of the question and remove the tag ,and it will go away.
See also: How do I remove topic tags from my question that are irrelevant?
See also: How do I remove topic tags from my question that are irrelevant?
About the Author
Robert Walker
Writer of articles on Mars and Space issues - Software Developer of Tune Smithy, Bounce Metronome etc.Studied at Wolfson College, Oxford
Lives in Isle of Mull
4.8m answer views110.3k this month
Top Writer2017, 2016, and 2015
Published WriterHuffPost, Slate, and 4 moreHuffPost, Slate, Forbes, Newsweek, Business Insider, and Science 2.0