lnwallet: remove draft wire structs from reservation.go, now lives in lnwire
lnwallet: remove draft wire structs from reservation.go, now lives in lnwire

bryanvu/lnd,LightningNetwork/lnd,ddustin/lnd,aakselrod/lnd,ddustin/lnd,bryanvu/lnd,LightningNetwork/lnd,AndrewSamokhvalov/lnd,BitfuryLightning/lnd,BitfuryLightning/lnd,aakselrod/lnd,AndrewSamokhvalov/lnd