I have currently removed some subsites on a site in the SharePoint. For example, I have a site called "sample 1" and there are another 15 subsites inside "sample 1" but I actually only needed 9 subsites. So I have deleted the other 6 subsites that I didn't want from the "sample 1" site.
It looked like this worked as only 9 subsites were on "sample 1". But, when I went to site content and structure, there were still 15 sites under "sample 1". I want everything to look nice and neat, so I also removed the subsites from site content and structure.