Examples/PPPoS: Fix copyright headers

examples/protocols/pppos_client/components/modem/src/esp_modem_netif.c

@@ -1,16 +1,8 @@
-// Copyright 2015-2018 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 #include "esp_netif.h"
 #include "esp_netif_ppp.h"
 #include "esp_modem.h"

examples/protocols/pppos_client/components/modem/src/sim800.c

@@ -1,16 +1,8 @@
-// Copyright 2015-2018 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 #include <stdlib.h>
 #include <string.h>
 #include "esp_log.h"

tools/ci/check_copyright_ignore.txt

@@ -3725,9 +3725,7 @@ examples/protocols/pppos_client/components/modem/include/sim800.h
 examples/protocols/pppos_client/components/modem/src/bg96.c
 examples/protocols/pppos_client/components/modem/src/esp_modem_compat.c
 examples/protocols/pppos_client/components/modem/src/esp_modem_dce_service.c
-examples/protocols/pppos_client/components/modem/src/esp_modem_netif.c
 examples/protocols/pppos_client/components/modem/src/sim7600.c
-examples/protocols/pppos_client/components/modem/src/sim800.c
 examples/protocols/pppos_client/example_test.py
 examples/protocols/pppos_client/main/pppos_client_main.c
 examples/protocols/slip/slip_udp/components/slip_modem/include/slip_modem.h