Revert "docs(samples): Retail. Prediction samples (#412)"

This reverts commit 025f04f.

README.md

@@ -87,9 +87,6 @@ Samples are in the [`samples/`](https://github.com/googleapis/java-retail/tree/m
 | Events Create Gcs Bucket | [source code](https://github.com/googleapis/java-retail/blob/main/samples/interactive-tutorials/src/main/java/events/setup/EventsCreateGcsBucket.java) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/java-retail&page=editor&open_in_editor=samples/interactive-tutorials/src/main/java/events/setup/EventsCreateGcsBucket.java) |
 | Create Test Resources | [source code](https://github.com/googleapis/java-retail/blob/main/samples/interactive-tutorials/src/main/java/init/CreateTestResources.java) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/java-retail&page=editor&open_in_editor=samples/interactive-tutorials/src/main/java/init/CreateTestResources.java) |
 | Remove Test Resources | [source code](https://github.com/googleapis/java-retail/blob/main/samples/interactive-tutorials/src/main/java/init/RemoveTestResources.java) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/java-retail&page=editor&open_in_editor=samples/interactive-tutorials/src/main/java/init/RemoveTestResources.java) |
-| Filtering Prediction | [source code](https://github.com/googleapis/java-retail/blob/main/samples/interactive-tutorials/src/main/java/prediction/FilteringPrediction.java) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/java-retail&page=editor&open_in_editor=samples/interactive-tutorials/src/main/java/prediction/FilteringPrediction.java) |
-| Prediction With Parameters | [source code](https://github.com/googleapis/java-retail/blob/main/samples/interactive-tutorials/src/main/java/prediction/PredictionWithParameters.java) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/java-retail&page=editor&open_in_editor=samples/interactive-tutorials/src/main/java/prediction/PredictionWithParameters.java) |
-| Simple Prediction | [source code](https://github.com/googleapis/java-retail/blob/main/samples/interactive-tutorials/src/main/java/prediction/SimplePrediction.java) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/java-retail&page=editor&open_in_editor=samples/interactive-tutorials/src/main/java/prediction/SimplePrediction.java) |
 | Add Fulfillment Places | [source code](https://github.com/googleapis/java-retail/blob/main/samples/interactive-tutorials/src/main/java/product/AddFulfillmentPlaces.java) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/java-retail&page=editor&open_in_editor=samples/interactive-tutorials/src/main/java/product/AddFulfillmentPlaces.java) |
 | Create Product | [source code](https://github.com/googleapis/java-retail/blob/main/samples/interactive-tutorials/src/main/java/product/CreateProduct.java) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/java-retail&page=editor&open_in_editor=samples/interactive-tutorials/src/main/java/product/CreateProduct.java) |
 | Crud Product | [source code](https://github.com/googleapis/java-retail/blob/main/samples/interactive-tutorials/src/main/java/product/CrudProduct.java) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/java-retail&page=editor&open_in_editor=samples/interactive-tutorials/src/main/java/product/CrudProduct.java) |