Eliminate some superfluous treat_expr's from normalizer -- fixes some  updating expressions too (#2525910)
Eliminate some superfluous treat_expr's from normalizer -- fixes some 
updating expressions too (#2525910)

cezarfx/zorba,28msec/zorba,bgarrels/zorba,bgarrels/zorba,cezarfx/zorba,28msec/zorba,bgarrels/zorba,cezarfx/zorba,bgarrels/zorba,28msec/zorba,28msec/zorba,28msec/zorba,cezarfx/zorba,bgarrels/zorba,28msec/zorba,cezarfx/zorba,cezarfx/zorba,28msec/zorba,cezarfx/zorba,cezarfx/zorba,bgarrels/zorba,28msec/zorba,bgarrels/zorba,cezarfx/zorba,cezarfx/zorba,bgarrels/zorba,28msec/zorba