Remove ROM::Relation#{sort_by, group} as both are proxied down to axiom
Remove ROM::Relation#{sort_by, group} as both are proxied down to axiom

rom-rb/rom,dekz/rom,kwando/rom,denyago/rom,dcarral/rom,rom-rb/rom,endash/rom,pdswan/rom,vrish88/rom,rom-rb/rom,Snuff/rom,pvcarrera/rom,cored/rom,jeremyf/rom,pxlpnk/rom