Revert "Improve the YamlScalar.span values with trailing whitespace"

This reverts commit cb3cf763349f1f7997a4fc7b2b402062b2a8f915.

https://github.com/dart-lang/yaml/issues/51 only seems to affect
JSON-encoded source files. Not worth this hack.
4 files changed
tree: 0ffd2b24f9e10e4d9f3fa161ee909931346bab1c
  1. pkgs/