chore: remove outdated comments

Author: dangotbanned

narwhals/_compliant/expr.py

@@ -792,7 +792,6 @@ def name(self) -> EagerExprNameNamespace[Self]:
         return EagerExprNameNamespace(self)
 
 
-# NOTE: See (https://github.com/narwhals-dev/narwhals/issues/2044#issuecomment-2674262833)
 class LazyExpr(
     CompliantExpr[CompliantLazyFrameT, NativeExprT_co],
     Protocol38[CompliantLazyFrameT, NativeExprT_co],

narwhals/_compliant/series.py

@@ -48,9 +48,6 @@ class EagerSeries(CompliantSeries, Protocol[NativeSeriesT_co]):
     @property
     def native(self) -> NativeSeriesT_co: ...
 
-    # NOTE: `ArrowSeries` needs to intercept `value` w/
-    # if self._backend_version < (13,) and hasattr(value, "as_py"):
-    #     value = value.as_py()  # noqa: ERA001
     def _from_scalar(self, value: Any) -> Self:
         return self._from_iterable([value], name=self.name, context=self)
 
@@ -63,9 +60,3 @@ def __narwhals_namespace__(self) -> EagerNamespace[Any, Self]: ...
 
     def _to_expr(self) -> EagerExpr[Any, Self]:
         return self.__narwhals_namespace__()._expr._from_series(self)
-
-    # TODO @dangotbanned: replacing `Namespace._create_compliant_series``
-    # - All usage within `*Expr.map_batches`
-    #   - `PandasLikeExpr` uses that **once**
-    #   - `ArrowExpr` uses **twice**
-    # - `PandasLikeDataFrame.with_row_index` uses the wrapped `utils` function once