codec: test: remove reference to wrapBytes in values_test.go (should only be in values_flex_test.go)

codec/values_test.go

@@ -22,7 +22,6 @@ type wrapUint64 uint64
 type wrapString string
 type wrapUint64Slice []wrapUint64
 type wrapStringSlice []wrapString
-type wrapBytesSlice []wrapBytes
 
 type stringUint64T struct {
 	S string