[BUGFIX release] Remove sourceMappingURL for dag-map.
[BUGFIX release] Remove sourceMappingURL for dag-map.

Babel is not properly ingesting the sourcemaps (even when the upstream
funnel brings the mapping file in with it), this commit strips it out to
avoid errors during uglification (reported in
ember-cli/ember-cli-uglify#29).

asakusuma/ember.js,mixonic/ember.js,mike-north/ember.js,Turbo87/ember.js,bekzod/ember.js,GavinJoyce/ember.js,cibernox/ember.js,givanse/ember.js,fpauser/ember.js,runspired/ember.js,kanongil/ember.js,sivakumar-kailasam/ember.js,karthiick/ember.js,mike-north/ember.js,fpauser/ember.js,csantero/ember.js,Serabe/ember.js,sivakumar-kailasam/ember.js,gfvcastro/ember.js,runspired/ember.js,kennethdavidbuck/ember.js,Serabe/ember.js,xiujunma/ember.js,elwayman02/ember.js,gfvcastro/ember.js,xiujunma/ember.js,kellyselden/ember.js,runspired/ember.js,givanse/ember.js,jaswilli/ember.js,mixonic/ember.js,thoov/ember.js,kellyselden/ember.js,jasonmit/ember.js,cibernox/ember.js,intercom/ember.js,mfeckie/ember.js,elwayman02/ember.js,fpauser/ember.js,csantero/ember.js,kanongil/ember.js,intercom/ember.js,jaswilli/ember.js,sivakumar-kailasam/ember.js,emberjs/ember.js,kennethdavidbuck/ember.js,kanongil/ember.js,jaswilli/ember.js,sandstrom/ember.js,jaswilli/ember.js,intercom/ember.js,karthiick/ember.js,miguelcobain/ember.js,emberjs/ember.js,mfeckie/ember.js,mike-north/ember.js,emberjs/ember.js,runspired/ember.js,jasonmit/ember.js,sivakumar-kailasam/ember.js,asakusuma/ember.js,asakusuma/ember.js,xiujunma/ember.js,bekzod/ember.js,jasonmit/ember.js,Gaurav0/ember.js,intercom/ember.js,kennethdavidbuck/ember.js,miguelcobain/ember.js,twokul/ember.js,karthiick/ember.js,mfeckie/ember.js,Serabe/ember.js,knownasilya/ember.js,givanse/ember.js,elwayman02/ember.js,GavinJoyce/ember.js,bekzod/ember.js,qaiken/ember.js,csantero/ember.js,Serabe/ember.js,Turbo87/ember.js,karthiick/ember.js,sly7-7/ember.js,stefanpenner/ember.js,Turbo87/ember.js,Turbo87/ember.js,xiujunma/ember.js,jasonmit/ember.js,thoov/ember.js,Gaurav0/ember.js,gfvcastro/ember.js,mike-north/ember.js,knownasilya/ember.js,givanse/ember.js,stefanpenner/ember.js,thoov/ember.js,qaiken/ember.js,twokul/ember.js,knownasilya/ember.js,tildeio/ember.js,tildeio/ember.js,miguelcobain/ember.js,sandstrom/ember.js,sly7-7/ember.js,GavinJoyce/ember.js,qaiken/ember.js,kennethdavidbuck/ember.js,fpauser/ember.js,kellyselden/ember.js,kellyselden/ember.js,kanongil/ember.js,asakusuma/ember.js,jasonmit/ember.js,thoov/ember.js,twokul/ember.js,gfvcastro/ember.js,stefanpenner/ember.js,bekzod/ember.js,Gaurav0/ember.js,twokul/ember.js,mixonic/ember.js,GavinJoyce/ember.js,Gaurav0/ember.js,elwayman02/ember.js,cibernox/ember.js,mfeckie/ember.js,tildeio/ember.js,sly7-7/ember.js,sandstrom/ember.js,qaiken/ember.js,cibernox/ember.js,miguelcobain/ember.js,sivakumar-kailasam/ember.js,csantero/ember.js