Remove lecture.notes

* talk.tex (\lecture): Remove writing to lecture.notes
This is of no practical use and never worked properly

talk.tex

@@ -12,9 +12,6 @@
 % hide pesky navigation
 \setbeamertemplate{navigation symbols}{}
 
-\newwrite\lecturenotes
-\openout\lecturenotes=lecture.notes
-
 \def\hangleft#1{%
   \settowidth{\dimen0}{#1}%
   \hspace*{-\dimen0}%
@@ -22,20 +19,10 @@
 }
 
 
-\def\lecturestart{%
-  \makeatletter
-  \xdef\@@lecture@notes{}
-  \makeatsymbol
-}
-\def\lecture#1{\write\lecturenotes{\unexpanded{#1}}}
-
-\def\todo#1{#1}
-
+\def\lecture#1{}
 
 \begin{document}
 
-%% TODO mention DRM in HTML5
-
 
 %%%=== BEGIN TIMEBLOCK 6.5m ==============================================
 
@@ -1384,6 +1371,4 @@ k.handler.guid||(k.handler.guid=c.guid)),e?m.splice(m.delegateCount++,0,k)
   \end{center}
 \end{frame}
 
-\closeout\lecturenotes
-
 \end{document}