Remove one unnecessary normalisation

This is from when we were using a different approach to sandboxing.


git-svn-id: http://www.latex-project.org/svnroot/experimental/trunk@5074 de43f980-851b-0410-b2f7-c40aca1f87e0
Document normalisation

Probably for some of the LuaTeX stuff we'll long-term want a flag to
turn the normalisation on and off (on for bidi work, off normally).


git-svn-id: http://www.latex-project.org/svnroot/experimental/trunk@5075 de43f980-851b-0410-b2f7-c40aca1f87e0