tree a37533ff2c33564146310fcb1df22ad4048dbf67
parent 8a08c20b4508a1337b2b78884f369891ca186f05
author Bob Nystrom <rnystrom@google.com> 1531431273 -0700
committer Bob Nystrom <rnystrom@google.com> 1531431273 -0700

Fix dart:convert "UTF8" -> "utf8".

While I was at it, I:

- Removed some unused imports.
- Fixed a deprecated API call.
- Removed the no-longer needed analysis options file.