move genesis fields into RequestInitChain. some nullable=false

Author: ebuchman

example/kvstore/helpers.go

@@ -33,7 +33,6 @@ func RandVals(cnt int) []types.Validator {
 // don't make any tx that modify the validator state
 func InitKVStore(app *PersistentKVStoreApplication) {
 	app.InitChain(types.RequestInitChain{
-		Validators:  RandVals(1),
-		GenesisFile: types.GenesisFile{},
+		Validators: RandVals(1),
 	})
 }