Remove RPC example (#6059)

* Remove support for `@feed` operations (#6052)

* Refs #23701. Remove feed readers and writers.

Signed-off-by: Miguel Company <[email protected]>

* Refs #23701. Remove feed operations from example.

Signed-off-by: Miguel Company <[email protected]>

* Refs #23701. Update readme.

Signed-off-by: Miguel Company <[email protected]>

* Refs #23701. Remove `InputFeedProcessor`.

Signed-off-by: Miguel Company <[email protected]>

* Refs #23703. Remove unsupported cases from example test.

Signed-off-by: Miguel Company <[email protected]>

---------

Signed-off-by: Miguel Company <[email protected]>
(cherry picked from commit 0ff6c95)

# Conflicts:
#	examples/cpp/rpc/ServerApp.cpp
#	examples/cpp/rpc/ServerApp.hpp
#	examples/cpp/rpc/types/calculatorServer.cxx
#	examples/cpp/rpc/types/calculatorServer.hpp
#	examples/cpp/rpc/types/calculatorServerImpl.hpp
#	examples/cpp/rpc/types/calculatorTypeObjectSupport.cxx
#	examples/cpp/rpc/types/calculatorTypeObjectSupport.hpp
#	include/fastdds/dds/rpc/interfaces.hpp

* Fix basic conflicts.

Signed-off-by: Miguel Company <[email protected]>

* Completely remove example.

Signed-off-by: Miguel Company <[email protected]>

---------

Signed-off-by: Miguel Company <[email protected]>
Co-authored-by: Miguel Company <[email protected]>

Author: mergify[bot]

examples/CMakeLists.txt

@@ -22,7 +22,6 @@ add_subdirectory(cpp/delivery_mechanisms)
 add_subdirectory(cpp/discovery_server)
 add_subdirectory(cpp/flow_control)
 add_subdirectory(cpp/hello_world)
-add_subdirectory(cpp/rpc)
 add_subdirectory(cpp/rtps)
 add_subdirectory(cpp/static_edp_discovery)
 add_subdirectory(cpp/topic_instances)