Bulk replace header guards to use

components/esp_modem/examples/ap_to_pppos/main/network_dce.h

@@ -7,8 +7,7 @@
    CONDITIONS OF ANY KIND, either express or implied.
 */
 
-#ifndef _NETWORK_DCE_H_
-#define _NETWORK_DCE_H_
+#pragma once
 
 #ifdef __cplusplus
 extern "C" {
@@ -43,5 +42,3 @@ void modem_stop_network();
 #ifdef __cplusplus
 }
 #endif
-
-#endif //_NETWORK_DCE_H_

components/esp_modem/examples/modem_console/main/console_helper.hpp

@@ -7,8 +7,7 @@
    CONDITIONS OF ANY KIND, either express or implied.
 */
 
-#ifndef MODEM_CONSOLE_CONSOLE_HELPER_H
-#define MODEM_CONSOLE_CONSOLE_HELPER_H
+#pragma once
 
 #include <vector>
 #include <algorithm>
@@ -112,5 +111,3 @@ private:
     std::function<bool(ConsoleCommand *)> func;
     const static esp_console_cmd_func_t command_func_pts[];
 };
-
-#endif //MODEM_CONSOLE_CONSOLE_HELPER_H

components/esp_modem/examples/modem_console/main/my_module_dce.hpp

@@ -7,8 +7,7 @@
    CONDITIONS OF ANY KIND, either express or implied.
 */
 
-#ifndef __MY_MODULE_DCE_HPP__
-#define __MY_MODULE_DCE_HPP__
+#pragma once
 
 
 #include "cxx_include/esp_modem_dce_factory.hpp"
@@ -38,6 +37,3 @@ std::unique_ptr<esp_modem::DCE> create_shiny_dce(const esp_modem::dce_config *co
 {
     return esp_modem::dce_factory::Factory::build_unique<MyShinyModem>(config, std::move(dte), netif);
 }
-
-
-#endif //__MY_MODULE_DCE_HPP__

components/esp_modem/examples/simple_cmux_client/main/simple_mqtt_client.hpp

@@ -6,8 +6,7 @@
    software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
    CONDITIONS OF ANY KIND, either express or implied.
 */
-#ifndef _SIMPLE_MQTT_CLIENT_H_
-#define _SIMPLE_MQTT_CLIENT_H_
+#pragma once
 
 #include <string>
 #include <memory>
@@ -72,6 +71,3 @@ public:
 private:
     std::unique_ptr<MqttClientHandle> h;
 };
-
-
-#endif //_SIMPLE_MQTT_CLIENT_H_