fix(reduce): disable lithium repeat last feature

This can lead to very long running reduction jobs while adding
little to no benefit with unreliable test cases. This is
already accounted for with our stability measurement.

Author: tysmith

src/grizzly/reduce/strategies/lithium.py

@@ -48,6 +48,7 @@ def __init__(self, testcases: list[TestCase]) -> None:
                        testcases.
         """
         super().__init__(testcases)
+        self.minimize_repeat = "never"
         self._current_feedback: bool | None = None
         self._current_reducer: ReductionIterator | None = None
         self._files_to_reduce: list[Path] = []