tex2lyx/TODO.txt: update once again

- the kurier font support of fileformat 461 was already committed
- nothing to do for format 460

src/tex2lyx/TODO.txt

@@ -83,8 +83,6 @@ Format LaTeX feature                        LyX feature
 459    beamer: \begin{frame},               \begin_layout Frame
        \begin{frame}[plain],                \begin_layout PlainFrame
        \begin{frame}[fragile]               \begin_layout FragileFrame
-460
-461
 462    New libertine LaTeX fonts:
        \usepackage[scale|scaled|ttscale=$val]{libertineMono-type1}
                                             \font_typewriter