newmap: remove extra deserialization in layout constraints
newmap: remove extra deserialization in layout constraints

StanfordLegion/legion,StanfordLegion/legion,StanfordLegion/legion,chuckatkins/legion,chuckatkins/legion,chuckatkins/legion,StanfordLegion/legion,sdalton1/legion,sdalton1/legion,chuckatkins/legion,chuckatkins/legion,sdalton1/legion,sdalton1/legion,StanfordLegion/legion,chuckatkins/legion,chuckatkins/legion,StanfordLegion/legion,sdalton1/legion,StanfordLegion/legion,StanfordLegion/legion,sdalton1/legion