Removed outdated docs about shading Elasticsearch

docs/java-api/index.asciidoc

@@ -130,62 +130,6 @@ and add it as a dependency. As an example, we will use the `slf4j-simple` logger
 </dependency>
 --------------------------------------------------
 
-
-== Dealing with JAR dependency conflicts
-
-If you want to use Elasticsearch in your Java application, you may have to deal with version conflicts with third party
-dependencies like Guava and Joda.  For instance, perhaps Elasticsearch uses Joda 2.8, while your code uses Joda 2.1.
-
-You have two choices:
-
-* The simplest solution is to upgrade. Newer module versions are likely to have fixed old bugs.
-The further behind you fall, the harder it will be to upgrade later. Of course, it is possible that you are using a
-third party dependency that in turn depends on an outdated version of a package, which prevents you from upgrading.
-
-* The second option is to relocate the troublesome dependencies and to shade them either with your own application
-or with Elasticsearch and any plugins needed by the Elasticsearch client.
-
-The https://www.elastic.co/blog/to-shade-or-not-to-shade["To shade or not to shade" blog post] describes
-all the steps for doing so.
-
-== Embedding jar with dependencies
-
-If you want to create a single jar containing your application and all dependencies, you should not
-use `maven-assembly-plugin` for that because it can not deal with `META-INF/services` structure which is
-required by Lucene jars.
-
-Instead, you can use `maven-shade-plugin` and configure it as follow:
-
-[source,xml]
---------------------------------------------------
-<plugin>
-    <groupId>org.apache.maven.plugins</groupId>
-    <artifactId>maven-shade-plugin</artifactId>
-    <version>2.4.1</version>
-    <executions>
-        <execution>
-            <phase>package</phase>
-            <goals><goal>shade</goal></goals>
-            <configuration>
-                <transformers>
-                    <transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
-                </transformers>
-            </configuration>
-        </execution>
-    </executions>
-</plugin>
---------------------------------------------------
-
-Note that if you have a `main` class you want to automatically call when running `java -jar yourjar.jar`, just add
-it to the `transformers`:
-
-[source,xml]
---------------------------------------------------
-<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
-    <mainClass>org.elasticsearch.demo.Generate</mainClass>
-</transformer>
---------------------------------------------------
-
 :client-tests: {docdir}/../../server/src/test/java/org/elasticsearch/client/documentation
 
 include::client.asciidoc[]