Remove benchmark example from docker fastdds image docs (#962)

Signed-off-by: Javier Gil Aviles <javgilavi@eprosima.com>
Co-authored-by: Javier Gil Aviles <javgilavi@eprosima.com>

Author: Javgilavi

docs/docker/fastdds/fast_dds.rst

@@ -72,25 +72,3 @@ or
     goToExamples
     cd dds/HelloWorldExample/bin
     ./DDSHelloWorldExample subscriber
-
-Benchmark Example
-^^^^^^^^^^^^^^^^^
-
-This example creates either a Publisher or a Subscriber and on a successful match starts sending samples.
-After a few seconds the process that launched the Publisher will show a report with the number of samples transmitted.
-
-On the subscriber side, run:
-
-.. code-block:: bash
-
-    goToExamples
-    cd dds/Benchmark/bin
-    ./DDSBenchmark subscriber udp
-
-On the publisher side, run:
-
-.. code-block:: bash
-
-    goToExamples
-    cd dds/Benchmark/bin
-    ./DDSBenchmark publisher udp