Changed suggested things

Removed context check from do_user_authentication.

Author: ytsuboi

features/cellular/framework/AT/AT_CellularNetwork.cpp

@@ -437,11 +437,6 @@ void AT_CellularNetwork::ppp_status_cb(nsapi_event_t event, intptr_t parameter)
 
 nsapi_error_t AT_CellularNetwork::do_user_authentication()
 {
-    // try to find or create context with suitable stack
-    if (!get_context()) {
-        return NSAPI_ERROR_NO_CONNECTION;
-    }
-
     // if user has defined user name and password we need to call CGAUTH before activating or modifying context
     if (_pwd && _uname) {
         _at.cmd_start("AT+CGAUTH=");

features/cellular/framework/AT/AT_CellularNetwork.h

@@ -154,6 +154,7 @@ class AT_CellularNetwork : public CellularNetwork, public AT_CellularBase
     void free_credentials();
 
     nsapi_error_t open_data_channel();
+    bool get_context();
     bool set_new_context(int cid);
 
     nsapi_error_t delete_current_context();
@@ -179,7 +180,6 @@ class AT_CellularNetwork : public CellularNetwork, public AT_CellularBase
     int _cell_id;
     nsapi_connection_status_t _connect_status;
     virtual nsapi_error_t do_user_authentication();
-    bool get_context();
     bool _new_context_set;
     bool _is_context_active;
     RegistrationStatus _reg_status;

features/cellular/framework/targets/QUECTEL/UG96/QUECTEL_UG96_CellularNetwork.cpp

@@ -45,11 +45,6 @@ nsapi_error_t QUECTEL_UG96_CellularNetwork::set_access_technology_impl(RadioAcce
 
 nsapi_error_t QUECTEL_UG96_CellularNetwork::do_user_authentication()
 {
-    // try to find or create context with suitable stack
-    if (!get_context()) {
-        return NSAPI_ERROR_NO_CONNECTION;
-    }
-
     if (_pwd && _uname) {
         _at.cmd_start("AT+QICSGP=");
         _at.write_int(_cid);