Is there a way to remove a note that you inadvertently put into a text?
If you hover your cursor over the note title a little red x will appear. Click it and the note will be deleted.
Note that if you're just looking at the resource text with its little yellow note flag and wondering where the "note title" is, you need to open the Notes file where that note is located. To do that, click on the little yellow note flag and that note will open up. Then proceed as Kevin explained above.