docs(duckdb): remove warning of duckdb not supporting chunk_size para…

…meter

In DuckDB this has been fixed in
duckdb/duckdb#6840 (comment)

Closes #10443

ibis/backends/duckdb/__init__.py

@@ -1383,10 +1383,6 @@ def to_pyarrow_batches(
         For analytics use cases this is usually nothing to fret about. In some cases you
         may need to explicit release the cursor.
 
-        ::: {.callout-warning}
-        ## DuckDB returns 1024 size batches regardless of what value of `chunk_size` argument is passed.
-        :::
-
         Parameters
         ----------
         expr