Remove (bad) unused require
Remove (bad) unused require

shelsonjava/dagre,git-ashish/dagre-d3,rwl/dagre_charted,lmcorbo/dagre,dominiek/dagre-d3,dagrejs/dagre-d3,kdawes/dagre,ENCODE-DCC/dagre-d3,kdawes/dagre,cbfx/dagre-d3,9n/dagre,dominiek/dagre-d3,cpettitt/dagre-d3,9n/dagre-d3,cpettitt/dagre-d3,9n/dagre,GerHobbelt/dagre,leMaik/graphlib-dot,shelsonjava/dagre,cpettitt/dagre-d3,shelsonjava/dagre,9n/dagre,cpettitt/dagre,cbfx/dagre-d3,ENCODE-DCC/dagre-d3,cpettitt/dagre,lmcorbo/dagre,witcxc/dagre,cpettitt/graphlib-dot,witcxc/dagre,abduld/dagre,rwl/graphlib_dot,abduld/dagre,rwl/dagre_charted,9n/dagre-d3,rwl/dagre,dominiek/dagre-d3,dagrejs/dagre-d3,git-ashish/dagre-d3,GerHobbelt/dagre,cpettitt/graphlib-dot,tylingsoft/dagre-layout,cbfx/dagre-d3,9n/dagre-d3,git-ashish/dagre-d3,GerHobbelt/dagre,lmcorbo/dagre,kdawes/dagre,rwl/dagre_charted,abduld/dagre,tylingsoft/dagre-layout,cpettitt/dagre,leMaik/graphlib-dot,harsha-mudi/dagre-d3,harsha-mudi/dagre-d3