Nit: Clean up comments in DataScan::_build_residual_evaluator (apache#2197)

<!--
Thanks for opening a pull request!
-->

<!-- In the case this PR will resolve an issue, please replace
${GITHUB_ISSUE_ID} below with the actual Github issue id. -->
<!-- Closes #${GITHUB_ISSUE_ID} -->

# Rationale for this change

Cleaning up comments in `DataScan::_build_residual_evaluator`, no code
changes.

# Are these changes tested?

N/A

# Are there any user-facing changes?

No

<!-- In the case of user-facing changes, please add the changelog label.
-->

Co-authored-by: Sreesh Maheshwar <smaheshwar@palantir.com>

Author: 2 people

pyiceberg/table/__init__.py

@@ -1841,13 +1841,11 @@ def _build_metrics_evaluator(self) -> Callable[[DataFile], bool]:
     def _build_residual_evaluator(self, spec_id: int) -> Callable[[DataFile], ResidualEvaluator]:
         spec = self.table_metadata.specs()[spec_id]
 
+        from pyiceberg.expressions.visitors import residual_evaluator_of
+
         # The lambda created here is run in multiple threads.
         # So we avoid creating _EvaluatorExpression methods bound to a single
         # shared instance across multiple threads.
-        # return lambda data_file: (partition_schema, partition_expr, self.case_sensitive)(data_file.partition)
-        from pyiceberg.expressions.visitors import residual_evaluator_of
-
-        # assert self.row_filter == False
         return lambda datafile: (
             residual_evaluator_of(
                 spec=spec,