Cellular: Removed API get_connection_status() from CellularNetwork

This was left accidentally after refactoring.
It wasn't giving correct states after refactoring.
CellularContext::get_connection_status should be used instead.

Author: Teppo Järvelin

UNITTESTS/features/cellular/framework/AT/at_cellularnetwork/at_cellularnetworktest.cpp

@@ -653,20 +653,6 @@ TEST_F(TestAT_CellularNetwork, test_AT_CellularNetwork_attach)
     cn.attach(&network_cb);
 }
 
-TEST_F(TestAT_CellularNetwork, test_get_connection_status)
-{
-    EventQueue que;
-    FileHandle_stub fh1;
-    ATHandler at(&fh1, que, 0, ",");
-
-    AT_CellularNetwork cn(at);
-
-    ATHandler_stub::nsapi_error_value = NSAPI_ERROR_OK;
-    network_cb_count = 0;
-    cn.attach(&network_cb);
-    EXPECT_TRUE(NSAPI_STATUS_DISCONNECTED == cn.get_connection_status());
-}
-
 TEST_F(TestAT_CellularNetwork, test_AT_CellularNetwork_set_receive_period)
 {
     EventQueue que;

UNITTESTS/stubs/AT_CellularNetwork_stub.cpp

@@ -44,11 +44,6 @@ void AT_CellularNetwork::attach(Callback<void(nsapi_event_t, intptr_t)> status_c
 {
 }
 
-nsapi_connection_status_t AT_CellularNetwork::get_connection_status() const
-{
-    return NSAPI_STATUS_LOCAL_UP;
-}
-
 nsapi_error_t AT_CellularNetwork::set_registration_urc(RegistrationType type, bool urc_on)
 {
     if (AT_CellularNetwork_stub::set_registration_urc_fail_counter) {

features/cellular/framework/API/CellularNetwork.h

@@ -327,12 +327,6 @@ class CellularNetwork {
      */
     virtual void attach(mbed::Callback<void(nsapi_event_t, intptr_t)> status_cb) = 0;
 
-    /** Get the connection status
-     *
-     *  @return         The connection status according to ConnectionStatusType
-     */
-    virtual nsapi_connection_status_t get_connection_status() const = 0;
-
     /** Read operator names
      *
      *  @param op_names      on successful return contains linked list of operator names.

features/cellular/framework/AT/AT_CellularNetwork.cpp

@@ -210,11 +210,6 @@ void AT_CellularNetwork::attach(Callback<void(nsapi_event_t, intptr_t)> status_c
     _connection_status_cb = status_cb;
 }
 
-nsapi_connection_status_t AT_CellularNetwork::get_connection_status() const
-{
-    return _connect_status;
-}
-
 nsapi_error_t AT_CellularNetwork::set_registration_urc(RegistrationType type, bool urc_on)
 {
     int index = (int)type;

features/cellular/framework/AT/AT_CellularNetwork.h

@@ -63,8 +63,6 @@ class AT_CellularNetwork : public CellularNetwork, public AT_CellularBase {
 
     virtual void attach(Callback<void(nsapi_event_t, intptr_t)> status_cb);
 
-    virtual nsapi_connection_status_t get_connection_status() const;
-
     virtual nsapi_error_t set_access_technology(RadioAccessTechnology rat);
 
     virtual nsapi_error_t scan_plmn(operList_t &operators, int &ops_count);