Update connectivity/drivers/cellular/TELIT/ME310/TELIT_ME310_CellularStack.cpp

Co-authored-by: Hugues Kamba <41612201+hugueskamba@users.noreply.github.com>

Author: talorion

connectivity/drivers/cellular/TELIT/ME310/TELIT_ME310_CellularStack.cpp

@@ -27,9 +27,7 @@ using namespace mbed;
 using namespace std::chrono_literals;
 
 
-namespace mbed {
 constexpr auto socket_timeout = 1s;
-}
 
 TELIT_ME310_CellularStack::TELIT_ME310_CellularStack(ATHandler &atHandler, int cid, nsapi_ip_stack_t stack_type, AT_CellularDevice &device) :
     AT_CellularStack(atHandler, cid, stack_type, device)