Remove legacy Adam optimizer.

PiperOrigin-RevId: 475238426

Author: tensorflower-gardener

site/en/tutorials/generative/style_transfer.ipynb

@@ -705,7 +705,7 @@
       },
       "outputs": [],
       "source": [
-        "opt = tf.keras.optimizers.legacy.Adam(learning_rate=0.02, beta_1=0.99, epsilon=1e-1)"
+        "opt = tf.keras.optimizers.Adam(learning_rate=0.02, beta_1=0.99, epsilon=1e-1)"
       ]
     },
     {
@@ -1125,6 +1125,7 @@
     "colab": {
       "collapsed_sections": [],
       "name": "style_transfer.ipynb",
+      "provenance": [],
       "toc_visible": true
     },
     "kernelspec": {