Remove links to migrated text tutorials. We already have a link to the text subsite, so there's no longer a need to call out the migrated docs individually.

PiperOrigin-RevId: 551590336

Author: pcoet

site/en/tutorials/text/index.md

@@ -86,9 +86,6 @@ processing:
   * [Basic text classification](https://www.tensorflow.org/tutorials/keras/text_classification)
   * [Text classification with TensorFlow Hub: Movie reviews](https://www.tensorflow.org/tutorials/keras/text_classification_with_hub)
   * [Load text](https://www.tensorflow.org/tutorials/load_data/text)
-  * [word2vec](https://www.tensorflow.org/tutorials/text/word2vec)
-  * [Warm-start embedding layer matrix](https://www.tensorflow.org/tutorials/text/warmstart_embedding_matrix)
-  * [Image captioning with visual attention](https://www.tensorflow.org/tutorials/text/image_captioning)
 * [Google Machine Learning: Text Classification guide](https://developers.google.com/machine-learning/guides/text-classification):
   A step-by-step introduction to text classification. This is a good place to
   start if you're new to machine learning.