cleanup code

common/cpp/include/asapo/common/common_c.h

common/cpp/include/asapo/request/request_pool.h

common/cpp/src/database/mongodb_client.cpp

producer/api/cpp/unittests/mocking.h

producer/api/cpp/unittests/test_producer_impl.cpp

receiver/src/data_cache.cpp

receiver/src/receiver.cpp

receiver/src/request.cpp

.../src/request_handler/request_handler_db_check_request.cpp

...iver/src/request_handler/request_handler_receive_data.cpp

.../src/request_handler/request_handler_receive_metadata.cpp

receiver/src/request_handler/requests_dispatcher.cpp

tests/automatic/mongo_db/auto_id/auto_id.cpp

...atic/mongo_db/insert_retrieve/insert_retrieve_mongodb.cpp

...sert_retrieve_dataset/insert_retrieve_dataset_mongodb.cpp

tests/automatic/mongo_db/meta/meta_mongodb.cpp

tests/automatic/producer/c_api/producer_api.c

...c/system_io/ip_tcp_network/client_serv/ip_tcp_network.cpp

tests/manual/performance_broker_receiver/getlast_broker.cpp

tests/manual/producer_cpp/CMakeLists.txt