Remove empty reference to the current version of Coq.
Remove empty reference to the current version of Coq.

Zimmi48/coq,coq/coq,Matafou/coq,gares/coq,maximedenes/coq,Zimmi48/coq,SkySkimmer/coq,maximedenes/coq,letouzey/coq-wip,JasonGross/coq,silene/coq,letouzey/coq-wip,ppedrot/coq,silene/coq,letouzey/coq-wip,ejgallego/coq,letouzey/coq-wip,Zimmi48/coq,coq/coq,JasonGross/coq,JasonGross/coq,coq/coq,coq/coq,letouzey/coq-wip,ejgallego/coq,ejgallego/coq,maximedenes/coq,SkySkimmer/coq,ejgallego/coq,ppedrot/coq,SkySkimmer/coq,gares/coq,ppedrot/coq,maximedenes/coq,SkySkimmer/coq,gares/coq,ppedrot/coq,maximedenes/coq,JasonGross/coq,ppedrot/coq,Zimmi48/coq,Matafou/coq,gares/coq,Matafou/coq,gares/coq,silene/coq