Remove references to github.com/tensorflow/models/blob/master/samples

It's been deleted by [tensorflow/models#8234](https://github.com/tensorflow/models/pull/8234)

PiperOrigin-RevId: 300614979
Change-Id: Ie37d9bb8001072a6f7ff3c6f4a7b0bcee5c08b51

tensorflow/java/src/main/java/org/tensorflow/package-info.java

@@ -36,7 +36,6 @@ limitations under the License.
  * </ul>
  *
  * <p>Additional examples can be found in the <a
- * href="https://github.com/tensorflow/models/tree/master/samples/languages/java">tensorflow/models</a>
- * GitHub repository.
+ * href="https://github.com/tensorflow/java">tensorflow/java</a> GitHub repository.
  */
 package org.tensorflow;