Your query is more suited to Adobe Analytics forum (link below). Coming to your question, for future hits, you can use Processing Rules to set the correct value for your variable. Refer to the documentation onCleaning up Values in a Report.For past data, you can create a sub-report using Classification variables to show correct values in your report. To delete the values, however, you will have to contact your Adobe Analytics consultant or reach out to the client care team.
Hope this helps. Feel free to explore Analytics forums for further information on your query.