Want to remove your WordPress Category Slug in WordPress, simply follow the given below steps and you are done:
1.Install the WP No Category Base WordPress Plugin
2.This plugin removes the mandatory ‘Category Base’ from your category permalinks (e.g. `/category/my-category/` to `/my-category/`).
Better and logical permalinks like yoursite.com/my-category/ and yoursite.com/my-category/my-post/.
3.After Installing the plugin finally you are done.