Remove two unused opens.
Remove two unused opens.

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