chore: fix checking two redundant conditions

Signed-off-by: eshwarprasadS <[email protected]>

src/instructlab/sdg/pipeline.py

@@ -199,7 +199,7 @@ def _generate_single(self, dataset) -> Dataset:
                 logger.info("Running block: %s", block_name)
 
                 # Check if batching is enabled
-                if self.ctx.batch_size is None or not self.ctx.batching_enabled:
+                if not self.ctx.batching_enabled:
                     logger.info(
                         "Batching disabled; processing block '%s' single-threaded.",
                         block_name,