fix glamor + babel modification (#1416)
fix glamor + babel modification (#1416)

dunno why this fixes it but it does. Without this change, having `gatsby-plugin-glamor` clobbers babel's import/export transpilation.
chiedo/gatsby,gatsbyjs/gatsby,ChristopherBiscardi/gatsby,ChristopherBiscardi/gatsby,fk/gatsby,danielfarrell/gatsby,mickeyreiss/gatsby,0x80/gatsby,fabrictech/gatsby,mingaldrichgan/gatsby,okcoker/gatsby,ChristopherBiscardi/gatsby,fabrictech/gatsby,okcoker/gatsby,fabrictech/gatsby,gatsbyjs/gatsby,fk/gatsby,Khaledgarbaya/gatsby,fk/gatsby,mickeyreiss/gatsby,danielfarrell/gatsby,gatsbyjs/gatsby,mingaldrichgan/gatsby,Khaledgarbaya/gatsby,chiedo/gatsby,ChristopherBiscardi/gatsby,chiedo/gatsby,gatsbyjs/gatsby,Khaledgarbaya/gatsby,gatsbyjs/gatsby,mickeyreiss/gatsby,okcoker/gatsby,0x80/gatsby,0x80/gatsby,mingaldrichgan/gatsby,gatsbyjs/gatsby,danielfarrell/gatsby