Use type import in RelayMutationQueue
Use type import in RelayMutationQueue

Summary: `RelayMutationQueue` only needs the `RelayStoreData` type, not the module (which causes a circular dependency).

Reviewed By: voideanvalue

Differential Revision: D2649156

fb-gh-sync-id: 1bef4cce188f171166fea780c16c0d2420b4b91b

voideanvalue/relay,kassens/relay,michaelchum/relay,zpao/relay,NevilleS/relay,chirag04/relay,cesarandreu/relay,Aweary/relay,iamchenxin/relay,yungsters/relay,Aweary/relay,wincent/relay,xuorig/relay,xuorig/relay,chentsulin/relay,dbslone/relay,michaelchum/relay,facebook/relay,facebook/relay,voideanvalue/relay,apalm/relay,yungsters/relay,zpao/relay,yungsters/relay,cpojer/relay,chirag04/relay,kassens/relay,andimarek/generic-relay,benjaminogles/relay,iamchenxin/relay,rosskevin/relay,facebook/relay,andimarek/generic-relay,NevilleS/relay,benjaminogles/relay,josephsavona/relay,wincent/relay,apalm/relay,chentsulin/relay,gabelevi/relay,kassens/relay,atxwebs/relay,kassens/relay,kassens/relay,voideanvalue/relay,wincent/relay,xuorig/relay,facebook/relay,michaelchum/relay,chentsulin/relay,NevilleS/relay,venepe/relay,dbslone/relay,iamchenxin/relay,xuorig/relay,voideanvalue/relay,voideanvalue/relay,kassens/relay,josephsavona/relay,freiksenet/relay,apalm/relay,cpojer/relay,andimarek/generic-relay,rosskevin/relay,gabelevi/relay,voideanvalue/relay,mroch/relay,xuorig/relay,wincent/relay,cpojer/relay,cesarandreu/relay,gabelevi/relay,cesarandreu/relay,venepe/relay,facebook/relay,atxwebs/relay,atxwebs/relay,mroch/relay,freiksenet/relay,mroch/relay,zpao/relay,Aweary/relay,josephsavona/relay,iamchenxin/relay,wincent/relay,cpojer/relay,freiksenet/relay,benjaminogles/relay,heracek/relay,wincent/relay,xuorig/relay,heracek/relay,venepe/relay,atxwebs/relay,facebook/relay,heracek/relay,forter/generic-relay,chirag04/relay