These blocks are no longer used:
* `allowed_phase_list` isn't used since commit 04605d5d5
* `level_two_user` isn't used since commit 26d14cbd0
* `heading` in `budgets/stats_spec` was added in c2457e36a but never
used
* `translatable` was added in 44d137a4c but it's overwritten in all the
contexts.
* `annotation` isn't used since commit 79d00e7b9
* `admin` in `tags/budget_investments_spec` isn't used since 8a2e15980
* `budget` in `welcome_spec` was added in 87be6f302 but never used
We're not adding the rule because it would apply the current line length
rule of 110 characters per line. We still haven't decided whether we'll
keep that rule or make lines shorter so they're easier to read,
particularly when vertically splitting the editor window.
So, for now, I'm applying the rule to lines which are about 90
characters long.