Fix restrict_universe_context to not remove useful constraints.
Fix restrict_universe_context to not remove useful constraints.

TheTypoMaster/coq,mattam82/coq,TOSPIO/coq,coq/coq,silene/coq,barras/coq,gmalecha/coq,gares/coq,ejgallego/coq,ppedrot/coq,gmalecha/coq,Zimmi48/coq,Zimmi48/coq,asr/coq,ppedrot/coq,gares/coq,Lionel-Rieg/coq,letouzey/coq-wip,herbelin/github-coq,shindere/coq,gares/coq,william-lawvere/coq,SkySkimmer/coq,mlasson/coq,barras/coq,pirapira/coq2rust,ale-f/coq,gmalecha/coq,william-lawvere/coq,coq/coq,coq/coq,amintimany/coq,Ptival/coq,letouzey/coq-wip,aspiwack/coq,letouzey/coq-wip,maximedenes/coq,mattam82/coq,ppedrot/coq,william-lawvere/coq,Ptival/coq,Zimmi48/coq,silene/coq,herbelin/github-coq,letouzey/coq-wip,amintimany/coq,JasonGross/coq,8l/coq,shindere/coq,ejgallego/coq,ejgallego/coq,SkySkimmer/coq,gares/coq,JasonGross/coq,8l/coq,ppedrot/coq,8l/coq,ale-f/coq,asr/coq,Lionel-Rieg/coq,ppedrot/coq,shindere/coq,coq/coq,Matafou/coq,jpdeplaix/coq,letouzey/coq-wip,pirapira/coq2rust,maximedenes/coq,mattam82/coq,maximedenes/coq,mlasson/coq,TOSPIO/coq,barras/coq,JasonGross/coq,TheTypoMaster/coq,gares/coq,Zimmi48/coq,asr/coq,herbelin/github-coq,aspiwack/coq,Ptival/coq,jpdeplaix/coq,aspiwack/coq,TOSPIO/coq,pirapira/coq2rust,amintimany/coq,Matafou/coq,maximedenes/coq,mlasson/coq,Lionel-Rieg/coq,JasonGross/coq,maximedenes/coq,Matafou/coq,TheTypoMaster/coq,ejgallego/coq,ale-f/coq,jpdeplaix/coq,silene/coq,SkySkimmer/coq,SkySkimmer/coq