Remove useless try-with clauses in newring.
Remove useless try-with clauses in newring.

This is already protected by then enter block.

SkySkimmer/coq,coq/coq,ejgallego/coq,gares/coq,coq/coq,coq/coq,Zimmi48/coq,silene/coq,JasonGross/coq,gares/coq,JasonGross/coq,ejgallego/coq,SkySkimmer/coq,SkySkimmer/coq,ejgallego/coq,Zimmi48/coq,coq/coq,Zimmi48/coq,JasonGross/coq,gares/coq,Zimmi48/coq,silene/coq,JasonGross/coq,gares/coq,silene/coq,gares/coq,SkySkimmer/coq,ejgallego/coq