revert one change from #5250, this one should use "sizes" (it doesn't use sharp transformer) (#5631)
revert one change from #5250, this one should use "sizes" (it doesn't use sharp transformer) (#5631)


gatsbyjs/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby,ChristopherBiscardi/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby,0x80/gatsby,mingaldrichgan/gatsby,gatsbyjs/gatsby,0x80/gatsby,ChristopherBiscardi/gatsby,mingaldrichgan/gatsby,fk/gatsby,fk/gatsby,ChristopherBiscardi/gatsby,mingaldrichgan/gatsby,0x80/gatsby,fk/gatsby,ChristopherBiscardi/gatsby