remove unused prop from Store
remove unused prop from Store

Reviewed By: jstejada

Differential Revision: D21337692

fbshipit-source-id: 0254e917eb0456ee3278d11685f52bdafbc0f169

xuorig/relay,yungsters/relay,kassens/relay,cpojer/relay,facebook/relay,wincent/relay,kassens/relay,cpojer/relay,voideanvalue/relay,voideanvalue/relay,josephsavona/relay,wincent/relay,kassens/relay,atxwebs/relay,facebook/relay,kassens/relay,xuorig/relay,josephsavona/relay,cpojer/relay,josephsavona/relay,atxwebs/relay,atxwebs/relay,facebook/relay,xuorig/relay,voideanvalue/relay,wincent/relay,wincent/relay,wincent/relay,facebook/relay,atxwebs/relay,xuorig/relay,voideanvalue/relay,wincent/relay,xuorig/relay,facebook/relay,kassens/relay,kassens/relay,voideanvalue/relay,xuorig/relay,facebook/relay,voideanvalue/relay,cpojer/relay,yungsters/relay,yungsters/relay