Code clean up

Removed accidental extra Adam Optimizer

Author: vinayak19th

examples/vision/nl_image_search.py

@@ -557,7 +557,6 @@ def test_step(self, features):
 train_dataset = get_dataset(os.path.join(tfrecords_dir, "train-*.tfrecord"), batch_size)
 valid_dataset = get_dataset(os.path.join(tfrecords_dir, "valid-*.tfrecord"), batch_size)
 
-optimizer = keras.optimizers.Adam(learning_rate=0.03)
 # Create a learning rate scheduler callback.
 reduce_lr = keras.callbacks.ReduceLROnPlateau(
     monitor="val_loss", factor=0.2, patience=3