Revert "Add es6-promisify"
Revert "Add es6-promisify"

This reverts commit c8cd133116475677f35cb166b476c4921f59bfbb.

It's not used in the code.

tomocchino/react,shergin/react,cpojer/react,apaatsio/react,yiminghe/react,jorrit/react,edvinerikson/react,apaatsio/react,joecritch/react,claudiopro/react,dilidili/react,mhhegazy/react,pyitphyoaung/react,acdlite/react,andrerpena/react,dilidili/react,acdlite/react,claudiopro/react,Simek/react,chenglou/react,cpojer/react,wmydz1/react,jdlehman/react,yiminghe/react,joecritch/react,STRML/react,flipactual/react,empyrical/react,apaatsio/react,silvestrijonathan/react,mosoft521/react,glenjamin/react,claudiopro/react,cpojer/react,camsong/react,trueadm/react,empyrical/react,chenglou/react,jordanpapaleo/react,niubaba63/react,anushreesubramani/react,pyitphyoaung/react,facebook/react,prometheansacrifice/react,chenglou/react,mjackson/react,jameszhan/react,rricard/react,camsong/react,prometheansacrifice/react,ArunTesco/react,glenjamin/react,anushreesubramani/react,cpojer/react,glenjamin/react,ArunTesco/react,Simek/react,yungsters/react,krasimir/react,apaatsio/react,apaatsio/react,joecritch/react,aickin/react,claudiopro/react,kaushik94/react,apaatsio/react,tomocchino/react,dilidili/react,syranide/react,yungsters/react,glenjamin/react,bspaulding/react,rickbeerendonk/react,rohannair/react,flarnie/react,pyitphyoaung/react,jameszhan/react,Simek/react,ericyang321/react,AlmeroSteyn/react,bspaulding/react,andrerpena/react,brigand/react,jorrit/react,chicoxyzzy/react,ericyang321/react,jordanpapaleo/react,rohannair/react,anushreesubramani/react,AlmeroSteyn/react,ericyang321/react,chicoxyzzy/react,mosoft521/react,silvestrijonathan/react,jzmq/react,bspaulding/react,jzmq/react,wmydz1/react,quip/react,yangshun/react,aickin/react,krasimir/react,krasimir/react,bspaulding/react,maxschmeling/react,acdlite/react,leexiaosi/react,mhhegazy/react,kaushik94/react,yangshun/react,rickbeerendonk/react,glenjamin/react,empyrical/react,camsong/react,empyrical/react,yangshun/react,chenglou/react,syranide/react,yangshun/react,leexiaosi/react,niubaba63/react,jdlehman/react,roth1002/react,STRML/react,quip/react,aickin/react,anushreesubramani/react,terminatorheart/react,yangshun/react,wmydz1/react,richiethomas/react,jquense/react,brigand/react,rohannair/react,jquense/react,richiethomas/react,claudiopro/react,nhunzaker/react,rickbeerendonk/react,jameszhan/react,STRML/react,VioletLife/react,rickbeerendonk/react,yiminghe/react,wmydz1/react,dilidili/react,nhunzaker/react,brigand/react,AlmeroSteyn/react,roth1002/react,andrerpena/react,jorrit/react,wmydz1/react,chicoxyzzy/react,nhunzaker/react,flarnie/react,maxschmeling/react,flarnie/react,facebook/react,jordanpapaleo/react,niubaba63/react,bspaulding/react,mosoft521/react,jzmq/react,prometheansacrifice/react,nhunzaker/react,rlugojr/react,TheBlasfem/react,billfeller/react,chenglou/react,syranide/react,chicoxyzzy/react,sekiyaeiji/react,facebook/react,chicoxyzzy/react,andrerpena/react,AlmeroSteyn/react,shergin/react,AlmeroSteyn/react,rohannair/react,shergin/react,rricard/react,glenjamin/react,jquense/react,edvinerikson/react,flarnie/react,tomocchino/react,kaushik94/react,silvestrijonathan/react,nhunzaker/react,yungsters/react,dilidili/react,maxschmeling/react,yiminghe/react,mjackson/react,prometheansacrifice/react,niubaba63/react,TheBlasfem/react,jzmq/react,jquense/react,joecritch/react,chicoxyzzy/react,yiminghe/react,andrerpena/react,rohannair/react,camsong/react,flipactual/react,shergin/react,brigand/react,jdlehman/react,chenglou/react,pyitphyoaung/react,VioletLife/react,jorrit/react,yungsters/react,Simek/react,silvestrijonathan/react,jorrit/react,jquense/react,richiethomas/react,shergin/react,rlugojr/react,pyitphyoaung/react,roth1002/react,cpojer/react,VioletLife/react,trueadm/react,rlugojr/react,rohannair/react,yiminghe/react,mosoft521/react,flarnie/react,flipactual/react,shergin/react,dilidili/react,glenjamin/react,edvinerikson/react,camsong/react,cpojer/react,richiethomas/react,jameszhan/react,quip/react,jordanpapaleo/react,wmydz1/react,VioletLife/react,mosoft521/react,empyrical/react,flarnie/react,roth1002/react,facebook/react,jzmq/react,quip/react,yungsters/react,mhhegazy/react,rricard/react,maxschmeling/react,jordanpapaleo/react,syranide/react,niubaba63/react,billfeller/react,rlugojr/react,rickbeerendonk/react,brigand/react,billfeller/react,trueadm/react,pyitphyoaung/react,trueadm/react,kaushik94/react,jordanpapaleo/react,edvinerikson/react,facebook/react,tomocchino/react,tomocchino/react,billfeller/react,STRML/react,tomocchino/react,rickbeerendonk/react,joecritch/react,edvinerikson/react,kaushik94/react,jzmq/react,terminatorheart/react,cpojer/react,tomocchino/react,Simek/react,terminatorheart/react,mjackson/react,AlmeroSteyn/react,sekiyaeiji/react,VioletLife/react,STRML/react,rohannair/react,rricard/react,yiminghe/react,prometheansacrifice/react,ericyang321/react,kaushik94/react,brigand/react,STRML/react,shergin/react,acdlite/react,prometheansacrifice/react,maxschmeling/react,silvestrijonathan/react,jdlehman/react,terminatorheart/react,jzmq/react,flarnie/react,billfeller/react,silvestrijonathan/react,ericyan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