There is no need to explicitly pass in the options
since this contained within the Encoder or Decoder struct
ever since https://github.com/go-json-experiment/json/pull/163.
Thus, remove it as an argument and fetch it from the coder.
This only modifies code that is compiled in under goexperiment.jsonv2.
Change-Id: I6c928b864bf7869889d7ee7d5c1d396fbe71296b
Reviewed-on: https://go-review.googlesource.com/c/go/+/695278 Reviewed-by: Damien Neil <dneil@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>