time: time/internal_test.go remove redundant type conversion
Change-Id: I5aaea4918f024a87146ba54a8d5307658d722fe9
Reviewed-on: https://go-review.googlesource.com/c/go/+/589635
Auto-Submit: Ian Lance Taylor <iant@google.com> Reviewed-by: hui zhou <hxzhouh@gmail.com> Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Michael Knyszek <mknyszek@google.com>