Remove whitespaces from empty lines (#7353)

official/recommendation/ncf_keras_benchmark.py

@@ -193,7 +193,7 @@ class NCFKerasAccuracy(NCFKerasBenchmarkBase):
     FLAGS.early_stopping = True
     FLAGS.num_gpus = 2
     self._run_and_report_benchmark()
-    
+
   def benchmark_2_gpus_early_stop_force_V2(self):
     self._setup()
     FLAGS.early_stopping = True
@@ -280,7 +280,7 @@ class NCFKerasAccuracy(NCFKerasBenchmarkBase):
     FLAGS.beta2 = 0.5
     FLAGS.epsilon = 1e-8
     self._run_and_report_benchmark_mlperf_like()
-    
+
   def benchmark_8_gpu_force_v2_mlperf_like(self):
     """8 GPU using keras fit/compile V2 codepath."""
     self._setup()

official/resnet/keras/keras_imagenet_benchmark.py

@@ -78,7 +78,7 @@ class Resnet50KerasAccuracy(keras_benchmark.KerasBenchmark):
     FLAGS.datasets_num_private_threads = 14
     FLAGS.use_tensor_lr = True
     self._run_and_report_benchmark()
-    
+
   def benchmark_8_gpu_force_v2(self):
     """Test Keras model with eager, dist_strat, force v2 and 8 GPUs."""
     self._setup()
@@ -579,7 +579,7 @@ class Resnet50KerasBenchmarkBase(keras_benchmark.KerasBenchmark):
     FLAGS.model_dir = self._get_model_dir('benchmark_8_gpu')
     FLAGS.batch_size = 128 * 8  # 8 GPUs
     self._run_and_report_benchmark()
-    
+
   def benchmark_8_gpu_force_v2(self):
     """Test Keras model with 8 GPUs and v2 codepath."""
     self._setup()