Remove reconnect from C++ Client (#7094)

src/SignalR/clients/cpp/include/signalrclient/connection.h

...nalR/clients/cpp/include/signalrclient/connection_state.h

...ignalR/clients/cpp/include/signalrclient/hub_connection.h

...SignalR/clients/cpp/include/signalrclient/hub_exception.h

src/SignalR/clients/cpp/src/signalrclient/connection.cpp

...SignalR/clients/cpp/src/signalrclient/connection_impl.cpp

src/SignalR/clients/cpp/src/signalrclient/connection_impl.h

src/SignalR/clients/cpp/src/signalrclient/hub_connection.cpp

...alR/clients/cpp/src/signalrclient/hub_connection_impl.cpp

...gnalR/clients/cpp/src/signalrclient/hub_connection_impl.h

src/SignalR/clients/cpp/src/signalrclient/url_builder.cpp

src/SignalR/clients/cpp/src/signalrclient/url_builder.h

...cpp/test/signalrclient-e2e-tests/hub_connection_tests.cpp

...nts/cpp/test/signalrclienttests/connection_impl_tests.cpp

...cpp/test/signalrclienttests/hub_connection_impl_tests.cpp

...ients/cpp/test/signalrclienttests/hub_exception_tests.cpp

.../cpp/test/signalrclienttests/internal_hub_proxy_tests.cpp

...ents/cpp/test/signalrclienttests/request_sender_tests.cpp

...ignalR/clients/cpp/test/signalrclienttests/test_utils.cpp

...cpp/test/signalrclienttests/websocket_transport_tests.cpp