merge-pr.sh: filter reviews to remove the PR author
merge-pr.sh: filter reviews to remove the PR author

This removes spurious Ack-by lines

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