Thread:CrimsonFlame2K/@comment-40045332-20191203193150/@comment-32712012-20191203201950

It is possible. Just go into the editor and open up the categories pane from the panel on the right side (clicking the arrow on the right side of the screen to open that panel). Then, scroll down to the Categories section, mouse over the category that you want to remove, and click the trash can icon on that category. After you've made whatever other edits to the article you want (which could be no edits), click the Publish button. That should remove the category for you.