fix(tvix/eval/tests/one_offs): test_source_builtin can be pure r/8182

`Evaluation::new_impure()` would require the test to be impure, but
there's nothing in this test specifically requiring us to make use of
impure features.

Change-Id: Idb24981195d1a94f51053ae04403eb5f0e27f3d9
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11725
Autosubmit: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Reviewed-by: Connor Brewster <cbrewster@hey.com>

0 files changed, 0 insertions, 0 deletions