1. DomName('FontFaceSet.delete')
  2. DocsEditable()
  3. Experimental()
bool delete(FontFace fontFace)

Source 

@DomName('FontFaceSet.delete')
@DocsEditable()
@Experimental() // untriaged
bool delete(FontFace fontFace) => _blink.BlinkFontFaceSet.instance.delete_Callback_1_(this, fontFace);