Fix test_hasKnownValue_list_invalid
Fix test_hasKnownValue_list_invalid

This test wasn't actually testing anything about lists, and was
redundant with test_hasKnownValue_dynamic.  Correcting the test to match
the probable intention.

R=brianwilkerson@google.com

Review URL: https://codereview.chromium.org/1413123002 .

dart-lang/sdk,dartino/dart-sdk,dart-archive/dart-sdk,dart-lang/sdk,dartino/dart-sdk,dart-archive/dart-sdk,dartino/dart-sdk,dartino/dart-sdk,dart-archive/dart-sdk,dartino/dart-sdk,dart-lang/sdk,dart-archive/dart-sdk,dart-archive/dart-sdk,dart-archive/dart-sdk,dart-lang/sdk,dartino/dart-sdk,dartino/dart-sdk,dart-lang/sdk,dartino/dart-sdk,dart-lang/sdk,dart-archive/dart-sdk,dart-archive/dart-sdk,dart-lang/sdk,dart-lang/sdk,dart-archive/dart-sdk,dartino/dart-sdk