Revert "Merge branch 'feature/support_gcc_v8.x' into 'master'"

This reverts merge request !1539

components/newlib/platform_include/pthread.h

@@ -1,40 +0,0 @@
-// Copyright 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.
-#ifndef __ESP_PLATFORM_PTHREAD_H__
-#define __ESP_PLATFORM_PTHREAD_H__
-
-#include <sys/types.h>
-#include <sys/time.h>
-#include <sys/features.h>
-
-// Remove this when GCC 5.2.0 is no longer supported
-#ifndef _POSIX_TIMEOUTS
-#define _POSIX_TIMEOUTS     // For pthread_mutex_timedlock
-#endif
-
-#include_next <pthread.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-int pthread_condattr_getclock(const pthread_condattr_t * attr, clockid_t * clock_id);
-
-int pthread_condattr_setclock(pthread_condattr_t *attr, clockid_t clock_id);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif // __ESP_PLATFORM_PTHREAD_H__