Remove SkThread::setProcessorAffinity()

src/utils/SkThreadUtils_pthread_mach.cpp

-/*
- * Copyright 2012 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include "SkThreadUtils.h"
-#include "SkThreadUtils_pthread.h"
-
-#include <mach/mach.h>
-#include <mach/thread_policy.h>
-#include <pthread.h>
-
-bool SkThread::setProcessorAffinity(unsigned int processor) {
-    SkThread_PThreadData* pthreadData = static_cast<SkThread_PThreadData*>(fData);
-    if (!pthreadData->fValidPThread) {
-        return false;
-    }
-
-    mach_port_t tid = pthread_mach_thread_np(pthreadData->fPThread);
-
-    thread_affinity_policy_data_t policy;
-    policy.affinity_tag = processor;
-
-    return 0 == thread_policy_set(tid,
-                                  THREAD_AFFINITY_POLICY,
-                                  (thread_policy_t) &policy,
-                                  THREAD_AFFINITY_POLICY_COUNT);
-}