Remove more compatibility layers in ssrelim.
Remove more compatibility layers in ssrelim.

coq/coq,coq/coq,ejgallego/coq,coq/coq,Zimmi48/coq,SkySkimmer/coq,ejgallego/coq,ejgallego/coq,Zimmi48/coq,SkySkimmer/coq,SkySkimmer/coq,Zimmi48/coq,coq/coq,Zimmi48/coq,ejgallego/coq,SkySkimmer/coq