Remove ReadJSONFile

Remove ReadJSONFile

Also some refactoring in batcharchive.

BUG=732677
Review-Url: https://codereview.chromium.org/2933273002
Committed: https://github.com/luci/luci-go/commit/a4a9617ec3dc88d18d92653b0270f584fcbcc98e

[mcgreevy, 2017-06-13 06:38:24]

mcgreevy@chromium.org changed reviewers:
+ tansell@chromium.org

[mithro, 2017-06-13 06:55:14]

lgtm

[mcgreevy, 2017-06-15 04:14:22]

The CQ bit was checked by mcgreevy@chromium.org

[commit-bot: I haz the power, 2017-06-15 04:14:30]

CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-06-15 04:20:00]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1497500062768100, "parent_rev":
"b903ee51e442ff3fdbe533b7e9cfec96139a8ad4", "commit_rev":
"a4a9617ec3dc88d18d92653b0270f584fcbcc98e"}

[commit-bot: I haz the power, 2017-06-15 04:20:04]

Description was changed from

==========
Remove ReadJSONFile

Also some refactoring in batcharchive.

BUG=732677
==========

to

==========
Remove ReadJSONFile

Also some refactoring in batcharchive.

BUG=732677

Review-Url: https://codereview.chromium.org/2933273002
Committed:
https://github.com/luci/luci-go/commit/a4a9617ec3dc88d18d92653b0270f584fcbcc98e
==========

[commit-bot: I haz the power, 2017-06-15 04:20:04]

Committed patchset #1 (id:1) as
https://github.com/luci/luci-go/commit/a4a9617ec3dc88d18d92653b0270f584fcbcc98e