Noissue - Cleanup. Remove last remnants of old thread code.

src/Thread.cpp

-/*
- * This file is part of Adblock Plus <https://adblockplus.org/>,
- * Copyright (C) 2006-present eyeo GmbH
- *
- * Adblock Plus is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 3 as
- * published by the Free Software Foundation.
- *
- * Adblock Plus is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef WIN32
-#include <unistd.h>
-#endif
-
-#include "Thread.h"
-
-using namespace AdblockPlus;
-
-void AdblockPlus::Sleep(int millis)
-{
-#ifdef WIN32
-  ::Sleep(millis);
-#else
-  usleep(millis * 1000);
-#endif
-}