Steps:
- Make sure the left zone [of the Score Editor] is ON.
- Expand the “Words” section (I hope you have at least one element inside).
- Right-click on any item that is in the section you just expanded and choose “Open as Palette”.
- Now right-click on the “Words” palette and choose “Note Symbols”.
Result:
→ the first item is deleted.
Here’s a video: