Revert "In NMake_gen, giving to tactic do_size a grammar rule which respects the levels."
Revert "In NMake_gen, giving to tactic do_size a grammar rule which respects the levels."

This reverts commit b6db76517b9a7f21078ab59a0b8eeee6bfdf5ba7.

mattam82/coq,ejgallego/coq,Lionel-Rieg/coq,william-lawvere/coq,coq/coq,Ptival/coq,SkySkimmer/coq,JasonGross/coq,gares/coq,Matafou/coq,coq/coq,maximedenes/coq,letouzey/coq-wip,maximedenes/coq,silene/coq,ejgallego/coq,ppedrot/coq,silene/coq,JasonGross/coq,letouzey/coq-wip,SkySkimmer/coq,mattam82/coq,maximedenes/coq,Zimmi48/coq,gares/coq,amintimany/coq,ppedrot/coq,ejgallego/coq,ppedrot/coq,Ptival/coq,Lionel-Rieg/coq,Zimmi48/coq,maximedenes/coq,gares/coq,william-lawvere/coq,amintimany/coq,coq/coq,Lionel-Rieg/coq,coq/coq,gares/coq,mattam82/coq,maximedenes/coq,letouzey/coq-wip,Zimmi48/coq,SkySkimmer/coq,Matafou/coq,gares/coq,amintimany/coq,JasonGross/coq,william-lawvere/coq,Zimmi48/coq,silene/coq,letouzey/coq-wip,Matafou/coq,ppedrot/coq,letouzey/coq-wip,ejgallego/coq,SkySkimmer/coq,ppedrot/coq,Ptival/coq,JasonGross/coq