py: Remove silly comment about interning keywords.

dpgeorge · dpgeorge · commit 0c8fcb9c4989 · 2014-04-28T09:56:31.000+01:00
Of course, keywords are turned into lexer tokens in the lexer, so will
never need to be interned (unless you do something like x="def").

As it is now, the following on pyboard makes no new qstrs:

    import pyb
    pyb.info()
diff --git a/py/qstrdefs.h b/py/qstrdefs.h
@@ -2,8 +2,6 @@
 // All the qstr definitions in this file are available as constants.
 // That is, they are in ROM and you can reference them simply as MP_QSTR_xxxx.
 
-// TODO probably should add Python keywords, eg if, def, etc
-
 Q(*)
 Q(__build_class__)
 Q(__class__)
